Belyaev L.A. The first archaeological researches in Sviyazhsk: 1978 – 1982 / Materials and researches on the archeology of Sviyazhsk. Volume. 1 / L.A. Belyaev. – Kazan: Publishing House of the Academy of Sciences of the Republic of Tatarstan, 2021. – 161 p.

Archaeology of the Early Nomads of Eurasia. Issue 2. – Samara: Samara State University of Social Sciences and Education, 2021. – 176 p., ill.

K.I. Krasilnikov, E.K. Apareeva. Dialogue of Cultures in Stone-Cutting Art. Based on the materials of statuary complexes from the Steppe Donets Region / Institute of Archaeology of the Tatarstan Academy of Sciences; (Executive Editor A.G. Sitdikov, F.Sh. Khuzin). – Kazan: Institute of Archaeology of the Tatarstan Academy of Sciences, 2021. – 368 p.: ill.

A.V. Shipilov. Eneolithic of the Ik-Belaya Interfluve (Based on Materials from Populated Settlement). – Kazan: 2021. – 358 p.

Archaeology of the Volga-Urals. Vol. 3. Early Iron Age/ Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Science; Sitdikov, A. Kh., Chizhesky, A.A. (eds.). – Kazan: Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences, 2021. – 676.: il.

Archaeology of the Volga-Urals. Vol. 2. Eneolithic and Bronze Age/ Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Science; Sitdikov, A. Kh., Chizhesky, A.A. (eds.). – Kazan: Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences, 2021. – 728p.: il.

Archaeology of the Volga-Urals. Vol. 1. Stone Age/ Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Science; Sitdikov, A. Kh., Galimova, M.Sh. (eds.). – Kazan: Institute of Archaeology named after A. Kh. Khalikov, Tatarstan Academy of Sciences, 2021, 2021. – 444 p.: il.

Bolgar Town: History of Study and Preservation / Institute of Archaeology named after A. Kh. Khalikov of the Academy of Sciences of the Republic of Tatarstan; Executive Editor A.G. Sitdikov. M.: Nauka, 2021. – 271 p., Ill.

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).