Ėffektivnostʹ kapitalʹnykh vlozheniĭ i novoĭ tekhniki v narodnom khoz︠i︡aĭstve ︠I︡Akutskoĭ ASSR : sbornik nauchnykh trudov - Egorov, Egor Grigorʹevich (︠I︡Akutskiĭ filial SO AN SSSR, 1981)