@article{DAN_1977_237_6_a8,
     author = {S. Z. Rafal'son},
     title = {On partial sums of {Fourier} series in orthogonal polynomials},
     journal = {Doklady Akademii Nauk},
     pages = {1297--1300},
     publisher = {mathdoc},
     volume = {237},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_6_a8/}
}