@article{ZVMMF_1978_18_6_a2,
     author = {A. A. Lyubushin},
     title = {An estimate of the rate of convergence of difference-quadrature approximations of variational problems},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1385--1396},
     publisher = {mathdoc},
     volume = {18},
     number = {6},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1978_18_6_a2/}
}