@article{ZNSL_1976_65_a13,
     author = {E. M. Dyn'kin},
     title = {On the general problem of the polynomial approximation in {Jordan} domains},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {189--191},
     publisher = {mathdoc},
     volume = {65},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1976_65_a13/}
}