@article{DE_1996_32_12_a4,
     author = {I. S. Lomov},
     title = {On the rate of convergence of biorthogonal expansions of functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1618--1629},
     publisher = {mathdoc},
     volume = {32},
     number = {12},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_12_a4/}
}