| 2026 |
Journal article |
ELSAYED, A., R. KHALFAOUI, Y. ZHOU, “Environmental Policy Stringency and Innovation: Unlocking Sustainable Growth in G20 Economies”, Business Strategy and the Environment, January 2026, pp. 1-25 |
| 2025 |
Journal article |
KHALFAOUI, R., S. BEN JABEUR, S. HAMMOUDEH, W. BEN ARFI, “The role of political risk, uncertainty, and crude oil in predicting stock markets: evidence from the UAE economy”, Annals of Operations Research, February 2025, vol. 345, no. 2-3, pp. 1105-1135 |
| 2025 |
Journal article |
LE, T.-L., J. W. GOODELL, R. KHALFAOUI, E. J. A. ABAKAH, B. DOĞAN, “The impact of economic outlook on green finance: insights from linkages between green and inflation-indexed bonds”, Environment, Development and Sustainability, March 2025, vol. 27, pp. 6507–6538 |
| 2025 |
Journal article |
GHOSH, S., B. DOGAN, R. KHALFAOUI, I. SHAHZADI, “Does import product diversification enhance energy demand in developed and developing economies? A policy-based analysis in the context of trade sustainability”, Energy Sources, Part B: Economics, Planning, and Policy , January 2025, vol. 20, no. 1 |
| 2025 |
Journal article |
BALCILAR, M., A. ELSAYED, R. KHALFAOUI, S. HAMMOUDEH, “Technological innovations fuel carbon prices and transform environmental management across Europe”, Journal of Environmental Management, January 2025, vol. 373, pp. 123663 |
| 2025 |
Journal article |
DOGAN, B., R. KHALFAOUI, B. BERGOUGUI, S. GHOSH, “Unveiling the impact of the digital economy on the interplay of energy transition, environmental transformation, and renewable energy adoption”, Research in International Business and Finance, April 2025, vol. 76, pp. 102837 |
| 2025 |
Journal article |
ELSAYED, A., G. GOZGOR, R. KHALFAOUI, S. TARCHALLA, “Impact of supply chain pressure on traditional energy and metal markets: A Wavelet-based Quantile-on-Quantile perspective”, Journal of Commodity Markets, June 2025, vol. 38, no. 100472 |
| 2025 |
Journal article |
ELSAYED, A., R. KHALFAOUI, D. ZHANG, A. URQUHART, “AI and carbon pricing in turbulent times: Navigating market dynamics for a sustainable future”, International Review of Financial Analysis, September 2025, vol. 107, no. 104632 |
| 2025 |
Journal article |
HOQUE, M. E., R. KHALFAOUI, A. LECCADITO, S. MEJRI, “Green and innovative assets in times of uncertainty: A portfolio perspective for environmental financial management”, Journal of Environmental Management, December 2025, vol. 395, no. 127746 |
| 2025 |
Faculty research seminar |
KHALFAOUI, R., “Climate risk matters: Machine learning forecasts for U.S. banking stocks” Climate Finance and Policy (CFP-2025). 2025, Montpellier, France |
| 2024 |
Journal article |
TIWARI, A., M. SHAHBAZ, R. KHALFAOUI, R. AHMED, S. HAMMOUDEH, “Directional predictability from energy markets to exchangerates and stock markets in the emerging market countries(E7+1): New evidence from cross-quantilogram approach”, International Journal of Finance and Economics, January 2024, vol. 29, no. 1, pp. 719-789 |
| 2024 |
Journal article |
GHAEMI ASL, M., R. KHALFAOUI, H. R. TAVAKKOLI, S. BEN JABEUR, “Quantile-based spillover connectedness among stochastic volatilities of ESG equities, Islamic and conventional stocks with implications for portfolio management”, The international Journal of Emerging Markets, February 2024, vol. 19, no. 11, pp. 3938-3976 |
| 2024 |
Journal article |
GHAEMI ASL, M., A. GHASEMOGHLI, R. KHALFAOUI, “Nash equilibrium in emerging partnership-based Islamic banking industry with a Bayesian game-theoretic approach”, The international Journal of Emerging Markets, November 2024, vol. 19, no. 11, pp. 3709-3728 |
| 2024 |
Journal article |
SHAHZAD, U., M. GHAEMI ASL, R. KHALFAOUI, M. TEDESCHI, “Extreme contributions of conventional investments vis-à-vis Islamic ones to renewables”, Renewable and Sustainable Energy Reviews, January 2024, vol. 189, no. Part B |
| 2024 |
Journal article |
KHALFAOUI, R., S. TARCHELLA, S. HAMMOUDEH, “The safe haven, hedging, and diversification properties of oil, gold, and cryptocurrency for the G7 equity markets: Evidence from the pre- and post-COVID-19 periods”, Research in International Business and Finance, January 2024, vol. 67, no. Part B |
| 2024 |
Journal article |
BEN BELGACEM, S., M. YOUNSI, M. BECHTINI, A. ALZUMAN, R. KHALFAOUI, “Do Financial Development, Institutional Quality and Natural Resources Matter the Outward FDI of G7 Countries? A Panel Gravity Model Approach”, Sustainability , March 2024, vol. 16, no. 6, pp. 2237 |
| 2024 |
Journal article |
KHALFAOUI, R., J. W. GOODELL, S. MEFTEH-WALI, M. Z. CHISHTI, G. GOZGOR, “Impact of climate risk shocks on global food and agricultural markets: A multiscale and tail connectedness analysis”, International Review of Financial Analysis, May 2024, vol. 93, no. 103206 |
| 2024 |
Journal article |
HELMI, M. H., A. ELSAYED, R. KHALFAOUI, “The impact of geopolitical risk on sustainable markets: A quantile-time-frequency analysis”, Finance Research Letters, June 2024, vol. 64, no. 105380 |
| 2024 |
Journal article |
KHALFAOUI, R., A. ELSAYED, S. NASREEN, D. GABAUER, “The impact of oil shocks on green, clean, and socially responsible markets”, Energy Economics, August 2024, vol. 136, pp. 107729 |
| 2024 |
Journal article |
KHALFAOUI, R., U. KAYANI, U. SHEIKH, D. ROUBAUD, S. HAMMOUDEH, “Impact of Climate Policy Uncertainty (CPU) and global Energy Uncertainty (EU) news on U.S. sectors: The moderating role of CPU on the EU and U.S. sectoral stock nexus”, Journal of Environmental Management, August 2024, vol. 366, pp. 121654 |
| 2024 |
Journal article |
AYSAN, A. F., J. BATTEN, G. GOZGOR, R. KHALFAOUI, Z. NANAEVA, “Metaverse and financial markets: A quantile-time-frequency connectedness analysis”, Research in International Business and Finance, October 2024, vol. 72, no. Part B, pp. 102527 |
| 2024 |
Journal article |
BALLOUK, H., H. NAMMOURI, S. BEN JABEUR, R. KHALFAOUI, “Entrepreneurial firm creation and economic uncertainty: an explainable artificial intelligence approach”, Venture Capital: An International Journal of Entrepreneurial Finance, September-October 2024 |
| 2024 |
Journal article |
DOGAN, B., L. KHANH CHU, R. KHALFAOUI, S. GHOSH, M. SHAHBAZ, “Strategy towards sustainable energy transition: The effect of policy uncertainty, environmental technology and natural resources rent in the OECD nations”, Resources Policy, November 2024, vol. 98 |
| 2024 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., A. ELSAYED , “Forecasting European Union Carbon Prices: A Boosted Regression Trees Learning Method” in The 7th Edition of Ethical Finance and Sustainability Conference: EFS-2024, 2024, Great Britain |
| 2024 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., “Evaluating Bitcoin, Gold, and the US Dollar as Hedges Against Global Risks and Uncertainties” in Financial Economics Meeting (FEM), 2024, Paris, France |
| 2023 |
Journal article |
KHALFAOUI, R., G. GOZGOR, J. W. GOODELL, “Impact of Russia-Ukraine war attention on cryptocurrency: Evidence from quantile dependence analysis”, Finance Research Letters, March 2023, vol. 52, pp. 103365 |
| 2023 |
Journal article |
KHALFAOUI, R., U. SHAHZAD, M. MAHDI GHAEMI ASL, S. SAMI BEN JABEUR, “Investigating the spillovers between energy, food, and agricultural commodity markets: New insights from the quantile coherency approach”, Quarterly Review of Economics and Finance, April 2023, vol. 88, pp. 63-80 |
| 2023 |
Journal article |
KHALFAOUI, R., S. MEFTEH-WALI, B. DOGAN, S. GHOSH, “Extreme spillover effect of COVID-19 pandemic-related news and cryptocurrencies on green bond markets: A quantile connectedness analysis”, International Review of Financial Analysis, March 2023, vol. 86, pp. 102496 |
| 2023 |
Journal article |
KHALFAOUI, R., S. HAMMOUDEH, M. Z. REHMAN, “Spillovers and connectedness among BRICS stock markets, cryptocurrencies, and uncertainty: Evidence from the quantile vector autoregression network”, Emerging Markets Review, March 2023, vol. 54 |
| 2023 |
Journal article |
GOZGOR, G., R. KHALFAOUI, L. YAROVAYA, “Global supply chain pressure and commodity markets: Evidence from multiple wavelet and quantile connectedness analyses”, Finance Research Letters, June 2023, vol. 54, no. 103791 |
| 2023 |
Journal article |
ZUOXIANG , Z., G. GOZGOR, M. C. KEUNG LAU, M. K. MAHALIK, G. PATEL, R. KHALFAOUI, “The impact of geopolitical risks on renewable energy demand in OECD countries”, Energy Economics, June 2023, vol. 122 |
| 2023 |
Journal article |
SI MOHAMMED, K., R. KHALFAOUI, B. DOGAN, G. DEEP SHARMA, U. MENTEL, “The reaction of the metal and gold resource planning in the post-COVID-19 era and Russia-Ukrainian conflict: Role of fossil fuel markets for portfolio hedging strategies”, Resources Policy, June 2023, vol. 83 |
| 2023 |
Journal article |
AYSAN, A. F., J. BATTEN, G. GOZGOR, R. KHALFAOUI, Z. NANAEVA, “Twitter Matters for Metaverse Stocks Amid Economic Uncertainty”, Finance Research Letters, June 2023, vol. 104116 |
| 2023 |
Journal article |
KHALFAOUI, R., H. ARMINEN, B. DOGAN, S. GHOSH, “Environment-growth nexus and corruption in the MENA region: Novel evidence based on method of moments quantile estimations”, Journal of Environmental Management, September 2023, vol. 342, no. 118146 |
| 2023 |
Journal article |
DHIFAOUI , Z., S. BEN JABEUR, R. KHALFAOUI, M. A. NASIR, “Time-varying partial-directed coherence approach to forecast global energy prices with stochastic volatility model”, Journal of Forecasting, December 2023, vol. 42, no. 8, pp. 2292-2306 |
| 2023 |
Journal article |
XU, Y., L. YUAN, R. KHALFAOUI, M. RADULESCU, S. MALLEK, X. ZHAO, “Making technological innovation greener: Does firm digital transformation work?”, Technological Forecasting and Social Change, October-December 2023, vol. 197, pp. 122928 |
| 2022 |
Journal article |
DHIFAOUI, Z., R. KHALFAOUI, M. ZOYNUL ABEDIN, B. SHI, “Quantifying information transfer among clean energy, carbon, oil, and precious metals: A novel transfer entropy-based approach”, Finance Research Letters, October 2022, vol. 49 |
| 2022 |
Journal article |
BUHARI, D., N. TRABELSI, R. KHALFAOUI, S. GHOSH, U. SHAHZAD, “Role of Ethnic Diversity, Temperature Changes, and Socio-Economic Conditions for Residential Energy Use and Energy Expenditures: Evidence from the United States”, Energy and Buildings, December 2022, vol. 276 |
| 2022 |
Journal article |
KHALFAOUI, R., S. MEFTEH-WALI, J.-L. VIVIANI, S. BEN JABEUR, M. Z. ABEDIN, B. LUCEY, “How do climate risk and clean energy spillovers, and uncertainty affect U.S. stock markets?”, Technological Forecasting and Social Change, December 2022, vol. 185 |
| 2022 |
Journal article |
KHALFAOUI, R., N. STEF, W. BEN ARFI, S. BEN JABEUR, “Dynamic spillover effects and connectedness among climate change, technological innovation, and uncertainty: Evidence from a quantile VAR network and wavelet coherence”, Technological Forecasting & Social Change, August 2022, vol. 181 |
| 2022 |
Journal article |
KHALFAOUI, R., S. BEN JABEUR, S. MEFTEH-WALI, A. TIWARI, “The time–frequency causal effect of COVID-19 outbreaks on the tourism sector: evidence from the European zone”, Current Issues in Tourism, December 2022, vol. 25, no. 24, pp. 3973-3993 |
| 2022 |
Journal article |
KHALFAOUI, R., “The spillover effects and connectedness among green commodities, Bitcoins, and US stock markets: Evidence from the quantile VAR network”, Journal of Environmental Management, March 2022, vol. 306, pp. 114493 |
| 2022 |
Journal article |
KHALFAOUI, R., S. A. SOLARIN, A. AL-QADASI, S. BEN JABEUR, “Dynamic causality interplay from COVID-19 pandemic to oil price, stock market, and economic policy uncertainty: evidence from oil-importing and oil-exporting countries”, Annals of Operations Research, January 2022, vol. 313, pp. 105-143 |
| 2022 |
Journal article |
DHIFAOUI, Z., R. KHALFAOUI, S. BEN JABEUR, M. ZOYNUL ABEDIN, “Exploring the effect of climate risk on agricultural and food stock prices: Fresh evidence from EMD-Based variable-lag transfer entropy analysis”, Journal of Environmental Management, November 2022, vol. 326 |
| 2021 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., “Can political risk predict stock markets during COVID-19 pandemic? Evidence from machine learning methods”, 2021, Istanbul, Turkey |
| 2021 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., “Dynamic spillovers effect and connectedness among climate change, technological innovation and uncertainty: Quantile VAR and multiple wavelet coherency networks”, 2021, Istanbul, Turkey |
| 2020 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., “Dynamic causality interplay from covid-19 pandemic to oil price, stock market, and economic policy uncertainty: Evidence from the oil-importing and oil-exporting countries” in RCEF 2020, 2nd Rajagiri Conference on Economics and Finance, 2020, Rajagiri, India |
| 2020 |
Communications in an Academical or Professional conference |
KHALFAOUI, R., “Measuring the connectedness between energy and non-energy commodity markets: An evidence for the quantile coherency and network analysis”, 2020, Istanbul, Turkey |
| 2019 |
Journal article |
SARWAR, S., R. KHALFAOUI, R. WAHEED, H. GHORBANI DASTGERDI, “Volatility spillovers and hedging: Evidence from Asian oil-importing countries”, Resources Policy, June 2019, vol. 61, pp. 479-488 |
| 2018 |
Journal article |
KHALFAOUI, R., “Oil–gold time varying nexus: A time–frequency analysis”, Physica A: Statistical Mechanics and Its Applications, August 2018, vol. 503, pp. 86-104 |
| 2018 |
Journal article |
KUMAR TIWARI, A., R. KHALFAOUI, S. A. SOLARIN, M. SHAHBAZ, “Analyzing the time-frequency lead–lag relationship between oil and agricultural commodities”, Energy Economics, November 2018, vol. 76, pp. 470-494 |
| 2017 |
Journal article |
BOUBAKER, H., R. KHALFAOUI, M. BOUTAHAR, “Wavelets and estimation of long memory in nonstationary models: Does anything beat the exact local whittle estimator?”, Communications in Statistics – Simulation and Computation, May 2017, vol. 46, no. 2 |
| 2015 |
Journal article |
KUMAR TIWARI, A., R. KHALFAOUI, S. A. SOLARIN, M. SHAHBAZ, “Analyzing volatility spillovers and hedging between oil and stock markets: Evidence from wavelet analysis”, Energy Economics, April 2015 |
