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@article{TM_1969_105_a8, author = {P. I. Lizorkin and S. M. Nikol'skii}, title = {Compactness of sets of differentiable functions}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {168--177}, publisher = {mathdoc}, volume = {105}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1969_105_a8/} }
P. I. Lizorkin; S. M. Nikol'skii. Compactness of sets of differentiable functions. 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. 168-177. http://geodesic.mathdoc.fr/item/TM_1969_105_a8/