Assessing the effect of political statements on oil price volatilityVladimir Nosov, Maria Tindova, Svetlana Makar, Lyudmila Rudenko, Galina Zhdanova, Natalya Suray and Al'bina SulejmanovaE3S Web Conf., 371 (2023) 05045DOI: https://doi.org/10.1051/e3sconf/202337105045