Trudy desi͡a︡tykh i odinnadt͡s︡atykh Chteniĭ, posvi͡a︡shchennykh razrabotke nauchnogo nasledii͡a︡ i razvitii͡u︡ ideĭ K.Ė. T͡S︡iolkovskogo, Kaluga, 1975, 1976 gg | lit.salon