Vybornov, Alexandr, et al. “Traits of the Neolithic-Eneolithic Archaeological layers’ Formation at the Sites of Algay and Oroshaemoe in the Low Volga Basin (Low Povoljie)”. Acta Geographica Lodziensia, vol. 110, Dec. 2020, pp. 49-59, doi:10.26485/AGL/2020/110/4.