Ra︠t︡sionalʹna︠i︡a ėkspluata︠t︡si︠i︡a sl︠i︡ud︠i︡anykh mestorozhdeniĭ - Busyrev, Vladislav Mikhaĭlovich (Izd-vo "Nauka," Leningradskoe otd-nie, 1987)