Polcaeva, Fatimat Abdulnetifovna. “THE USE OF VISUAL SOURCES IN HISTORICAL RESEARCH (ON THE EXAMPLE OF V.F. TIMM’S ILLUSTRATIONS)”. History, Archeology and Ethnography of the Caucasus, vol. 15, no. 3, Oct. 2019, pp. 376-89, https://doi.org/10.32653/CH153376-389.