%0 Journal Article
%A A. Umar
%T Some combinatorial problems in the theory of symmetric inverse semigroups
%J Algebra and discrete mathematics
%D 2010
%P 115-126
%V 9
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ADM_2010_9_2_a8/
%G en
%F ADM_2010_9_2_a8