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@article{DM_1989_1_3_a9, author = {S. S. Marchenkov}, title = {Finite initial segments of the upper semilattice of finite-automaton degrees}, journal = {Diskretnaya Matematika}, pages = {96--103}, publisher = {mathdoc}, volume = {1}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1989_1_3_a9/} }
S. S. Marchenkov. Finite initial segments of the upper semilattice of finite-automaton degrees. Diskretnaya Matematika, Tome 1 (1989) no. 3, pp. 96-103. http://geodesic.mathdoc.fr/item/DM_1989_1_3_a9/