%0 Journal Article
%A  Iqbalunnisa
%T On some problems of G. Gratzer and E. T. Schmidt
%J Fundamenta Mathematicae
%D 1965
%P 181-185
%V 57
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-57-2-181-185/
%R 10.4064/fm-57-2-181-185
%G de
%F 10_4064_fm_57_2_181_185