Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1987__23_2_a1, author = {Zelinka, Bohdan}, title = {Neighbourhood digraphs}, journal = {Archivum mathematicum}, pages = {69--70}, publisher = {mathdoc}, volume = {23}, number = {2}, year = {1987}, mrnumber = {930322}, zbl = {0626.05018}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1987__23_2_a1/} }
Zelinka, Bohdan. Neighbourhood digraphs. Archivum mathematicum, Tome 23 (1987) no. 2, pp. 69-70. http://geodesic.mathdoc.fr/item/ARM_1987__23_2_a1/