1. Altman, N. S. (1992). An introduction to kernel and nearest-neighbor nonparametric regression. The American Statistician, 46(3), 175–185.
2. Antonakakis, N., Gupta, R., Kollias, C., & Papadamou, S. (2017). Geopolitical risks and the oil-stock nexus over 1899–2016. Finance Research Letters, 23, 165–173.
3. Batten, J. A., Choudhury, T., Kinateder, H., & Wagner, N. F. (2022). Volatility impacts on the european banking sector: GFC and COVID-19. Annals of Operations Research, 2022, 1–26.
4. Bauer, E., & Kohavi, R. (1999). An empirical comparison of voting classification algorithms: Bagging, boosting, and variants. Machine learning, 36(1), 105–139.
5. Bekiros, S., Gupta, R., & Paccagnini, A. (2015). Oil price forecastability and economic uncertainty. Economics Letters, 132, 125–128.