Individual from the kurgan burial of the XII century in the Middle Oka — experience of complex archaeological and genetic research V.P. Guseva, I.Yu. Adrianova, S.S. Kunizheva, E.I. Rogaev, A.D. Soshkina, A.B. Malyarchuk, S.M. Slepchenko, T.V. Andreeva, A.S. Syrovatko