@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/}
}