Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1976__26_2_a1, author = {Harborth, Heiko}, title = {Parity of numbers of crossings for complete $n$-partite graphs}, journal = {Mathematica slovaca}, pages = {77--95}, publisher = {mathdoc}, volume = {26}, number = {2}, year = {1976}, mrnumber = {0439671}, zbl = {0322.05106}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1976__26_2_a1/} }
Harborth, Heiko. Parity of numbers of crossings for complete $n$-partite graphs. Mathematica slovaca, Tome 26 (1976) no. 2, pp. 77-95. http://geodesic.mathdoc.fr/item/MASLO_1976__26_2_a1/