%0 Journal Article %A Havel, Václav %T Note on weak epimorphisms of $3$-nets without singular points %J Časopis pro pěstování matematiky %D 1976 %P 60-68 %V 101 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1976.108681/ %R 10.21136/CPM.1976.108681 %G en %F 10_21136_CPM_1976_108681