@article{ZNSL_1984_135_a9,
     author = {O. G. Parfenov},
     title = {Faber polynomials and widths of {Smimov} classes in integral metrics},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {108--112},
     year = {1984},
     volume = {135},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1984_135_a9/}
}