@article{IVM_2008_5_a6,
     author = {V. G. Krotov and M. A. Prokhorovich},
     title = {The {Luzin} approximation of functions from the classes $W^p_\alpha$ on metric spaces with measure},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {55--66},
     publisher = {mathdoc},
     number = {5},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2008_5_a6/}
}