Geograficheskie problemy sovershenstvovani︠i︡a organiza︠t︡sii otdykha i turizma - Pospelov, E. M. (Evgeniĭ Mikhaĭlovich); Putrik, ︠I︡U. S.; Sveshnikov, V. V. (Akademi︠i︡a nauk SSSR, Moskovskiĭ filial Geogr. ob-va SSSR, 1985)