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@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/} }
N. M. Isakov. A set of discontinuity points of a~function that is essentially continuous. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1989), pp. 3-5. http://geodesic.mathdoc.fr/item/IVM_1989_5_a0/