Vaiman D. Bulgarians in Russia at the beginning of the XXI century (based on Population Censuses of 2002 - 2010). ВПФИЦ [Internet]. 2020 Apr. 17 [cited 2026 May 29];(1):80-7. Available from: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2020n1p8