Gulaeva, Evgenia Ur'evna. “THE UNKNOWN RESEARCHER OF THE CAUCASUS: LYUDMILA FILIPPOVNA VINOGRADOVA (1904-1985)”. History, Archeology and Ethnography of the Caucasus, vol. 17, no. 3, Oct. 2021, pp. 721-34, https://doi.org/10.32653/CH173721-734.