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@article{TRSPY_1974_131_a8, author = {G. G. Kazaryan}, title = {The comparison of differential operators and differential operators of constant strength}, journal = {Informatics and Automation}, pages = {94--118}, publisher = {mathdoc}, volume = {131}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1974_131_a8/} }
G. G. Kazaryan. The comparison of differential operators and differential operators of constant strength. Informatics and Automation, Investigations in the theory of differentiable functions of many variables and its applications. Part V, Tome 131 (1974), pp. 94-118. http://geodesic.mathdoc.fr/item/TRSPY_1974_131_a8/