V.P.Ivannikov et al: "ND-69 OS for BESM-6"; N.Govorun et al: "DUBNA monitoring system for BESM-6"; E.A.Zhogolev, Kabanov: "UNIOS-68 OS pronciples"; V.Afinogenov et al: "OS for BESM-4"; I.Belokurskaya, N.Kushnerov, M.Nemenman: "Main functions of Minsk-32 dispatcher"; A.Liakh, M.Margolin, M.Skoromnik "Implementation of an OS for Minsk-23 computer"; E.Mochalin, L.Shurukht: "Software information retrieval service based on edge-perforated cards techniquie"