Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1987_41_1_a11, author = {L. M. Koganov}, title = {An oriented graph connected with an ordered pair of ordered partitions}, journal = {Matemati\v{c}eskie zametki}, pages = {101--103}, publisher = {mathdoc}, volume = {41}, number = {1}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1987_41_1_a11/} }
L. M. Koganov. An oriented graph connected with an ordered pair of ordered partitions. Matematičeskie zametki, Tome 41 (1987) no. 1, pp. 101-103. http://geodesic.mathdoc.fr/item/MZM_1987_41_1_a11/