@article{IVM_1960_1_a20,
     author = {P. I. Ruban and K. V. Krasil'nikov},
     title = {A~method of approximating by trigonometric polynomials functions satisfying {a~Lipschitz} condition},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {194--197},
     publisher = {mathdoc},
     number = {1},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1960_1_a20/}
}