%0 Journal Article
%A I. I. Parovichenko
%T On the general theory of operations on sets
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1973
%P 133-160
%V 28
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1973_28_5_a6/
%G en
%F RM_1973_28_5_a6