Kozlovskiy, V., R. Braslavsky, S. Troitskiy, Y. Prozorova, and A. Malinov. “Sociological Heritage of Academician Alexander Lappo-Danilevsky ”. Zhurnal Sotsiologii I Sotsialnoy Antropologii (The Journal of Sociology and Social Anthropology) 17 (4), 189–202. https://www.jourssa.ru/index.php/jourssa/article/view/681.