Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1985__21_4_a4, author = {Majcher, Zofia}, title = {Matrices representable by directed graphs}, journal = {Archivum mathematicum}, pages = {205--218}, publisher = {mathdoc}, volume = {21}, number = {4}, year = {1985}, mrnumber = {833133}, zbl = {0615.05043}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1985__21_4_a4/} }
Majcher, Zofia. Matrices representable by directed graphs. Archivum mathematicum, Tome 21 (1985) no. 4, pp. 205-218. http://geodesic.mathdoc.fr/item/ARM_1985__21_4_a4/