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@article{TM_1969_105_a11, author = {T. S. Pigolkina}, title = {On the theory of weight classes}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {201--212}, publisher = {mathdoc}, volume = {105}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1969_105_a11/} }
T. S. Pigolkina. On the theory of weight classes. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Investigations in the theory of differentiable functions of many variables and its applications. Part III, Tome 105 (1969), pp. 201-212. http://geodesic.mathdoc.fr/item/TM_1969_105_a11/