@article{10_21136_CPM_1987_118292,
     author = {Lettrich, Jaroslav},
     title = {Anti-nets. {I.} {(Basic} notation and properties - closure conditions)},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {6--31},
     publisher = {mathdoc},
     volume = {112},
     number = {1},
     year = {1987},
     doi = {10.21136/CPM.1987.118292},
     mrnumber = {880930},
     zbl = {0628.51002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1987.118292/}
}