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@article{MZM_1987_41_6_a9, author = {U. A. Nummert}, title = {The monoid of strict endomorphisms of wreath products of graphs}, journal = {Matemati\v{c}eskie zametki}, pages = {844--853}, publisher = {mathdoc}, volume = {41}, number = {6}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1987_41_6_a9/} }
U. A. Nummert. The monoid of strict endomorphisms of wreath products of graphs. Matematičeskie zametki, Tome 41 (1987) no. 6, pp. 844-853. http://geodesic.mathdoc.fr/item/MZM_1987_41_6_a9/