@article{10_21136_CPM_1978_117984,
     author = {Koman, Milan},
     title = {New upper bounds for the crossing number of $K_n$ on the {Klein} bottle},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {282--288},
     publisher = {mathdoc},
     volume = {103},
     number = {3},
     year = {1978},
     doi = {10.21136/CPM.1978.117984},
     mrnumber = {506557},
     zbl = {0395.05029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1978.117984/}
}