Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MT_1987_9_a6, author = {V. K. Ionin}, title = {Structures that can be generated by sets of morphisms}, journal = {Matemati\v{c}eskie trudy}, pages = {66--84}, publisher = {mathdoc}, volume = {9}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_1987_9_a6/} }
V. K. Ionin. Structures that can be generated by sets of morphisms. Matematičeskie trudy, Tome 9 (1987), pp. 66-84. http://geodesic.mathdoc.fr/item/MT_1987_9_a6/