@article{IVM_1989_5_a0,
     author = {N. M. Isakov},
     title = {A set of discontinuity points of a~function that is essentially continuous},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--5},
     publisher = {mathdoc},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_5_a0/}
}