@article{DE_1977_13_10_a19,
     author = {L. A. Boziev},
     title = {An estimate of the convergence of the {Ritz} and least squares methods for certain problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1873--1875},
     publisher = {mathdoc},
     volume = {13},
     number = {10},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_10_a19/}
}