%0 Journal Article %A N. K. Kossovski %T A construction of basic operators of the combination theory of $K$-algorithms, using operators of a simple kind %J Zapiski Nauchnykh Seminarov POMI %D 1968 %P 80-94 %V 8 %U http://geodesic.mathdoc.fr/item/ZNSL_1968_8_a8/ %G ru %F ZNSL_1968_8_a8