Yu. A. Zeleneev, E. M. Pigarev. Selitrennoe Settlement: Archaeological Studies at Bolnichny Bugor in 2014-2016: Monograph. Ministry of Science and Higher Education of the Russian Federation, Federal State Budgetary Educational Institution of Higher Education Mari State University, Academy of Sciences of the Republic of Tatarstan, Institute of Archaeology named after A. Kh. Khalikov. – Yoshkar-Ola: Mari State University Publ., 2021. – 156 p. – (Materials and Studies on the Archaeology of the Volga region; Issue 13).