Prin︠t︡sipy issledovani︠i︡a i planirovani︠i︡a regionalʹnoĭ sistemy kulʹturnogo obsluzhivani︠i︡a naseleni︠i︡a - Kogan, Lev Naumovich (Akademi︠i︡a nauk SSSR, Uralʹskiĭ nauch. ︠t︡sentr, 1982)