@article{10_21136_CMJ_1975_101314,
     author = {Jakub{\'\i}k, J\'an},
     title = {Unoriented graphs of modular lattices},
     journal = {Czechoslovak Mathematical Journal},
     pages = {240--246},
     publisher = {mathdoc},
     volume = {25},
     number = {2},
     year = {1975},
     doi = {10.21136/CMJ.1975.101314},
     mrnumber = {0369196},
     zbl = {0314.06006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1975.101314/}
}