%0 Journal Article %A V. V. Rybakov %T Equations in a free topo-Boolean algebra and the substitution %J Doklady Akademii Nauk %D 1986 %P 554-557 %V 287 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_287_3_a9/ %G ru %F DAN_1986_287_3_a9