%0 Journal Article
%A Protić 

 Petar
%A Bogdanović Stojan
%T Some congruences on a 

 Strongly 

 p-inverse 

 r-semigroup
%J Novi Sad Journal of Mathematics
%D 1985
%P 79-89
%V 15
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NSJOM_1985_15_2a_6/
%F NSJOM_1985_15_2a_6