%0 Journal Article %A Kulenović, Mustafa R. S. %T On a result of Etgen and Lewis %J Czechoslovak Mathematical Journal %D 1982 %P 373-376 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1982.101812/ %R 10.21136/CMJ.1982.101812 %G en %F 10_21136_CMJ_1982_101812