@article{10_21136_CPM_1976_108681,
     author = {Havel, V\'aclav},
     title = {Note on weak epimorphisms of $3$-nets without singular points},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {60--68},
     publisher = {mathdoc},
     volume = {101},
     number = {1},
     year = {1976},
     doi = {10.21136/CPM.1976.108681},
     mrnumber = {0492038},
     zbl = {0334.50013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1976.108681/}
}