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@article{IVM_1973_6_a3, author = {M. I. Ganzburg}, title = {The pointwise differentiability of functions from~$W_p^l$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {32--36}, publisher = {mathdoc}, number = {6}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1973_6_a3/} }
M. I. Ganzburg. The pointwise differentiability of functions from~$W_p^l$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1973), pp. 32-36. http://geodesic.mathdoc.fr/item/IVM_1973_6_a3/