%0 Journal Article %A Jakubík, Ján %T Unoriented graphs of modular lattices %J Czechoslovak Mathematical Journal %D 1975 %P 240-246 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1975.101314/ %R 10.21136/CMJ.1975.101314 %G en %F 10_21136_CMJ_1975_101314