Warriors with three spades on the 1st - 2nd cent. gravestones or at the question of the tactics of Bosporan infantry - Nefëdkin, Aleksandr Konstantinovič (Bosporskij fenomen : pogrebal'nye pamjatniki i svjatilišča: materialy meždunarodnoj naučnoj konferencii : [pamjati Evgenija Jakovleviča Rogova (1951-2001)], 2002)