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@article{IVM_1986_7_a12, author = {Yu. L. Shmul'yan}, title = {A multiplication theorem for transfer functions in general systems theory}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {76--79}, publisher = {mathdoc}, number = {7}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1986_7_a12/} }
Yu. L. Shmul'yan. A multiplication theorem for transfer functions in general systems theory. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 7 (1986), pp. 76-79. http://geodesic.mathdoc.fr/item/IVM_1986_7_a12/