Methodology for the study of the conceptual foundations of pension legislation in the United Kingdom, France, and RussiaAnna Viktorovna Aleksandrova, Angelina Vyacheslavovna Lapaeva, Anastasia Andreevna Ryzhova and Elena Alekseevna SerebryakovaSHS Web Conf., 118 (2021) 01005DOI: https://doi.org/10.1051/shsconf/202111801005