%0 Journal Article
%A Umar, Abdullahi
%T On the ranks of certain finite semigroups of order-decreasing transformations.
%J Portugaliae mathematica
%D 1996
%P 23-34
%V 53
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1996__53_1_47476/
%G en
%F PORMA_1996__53_1_47476