@article{ZVMMF_1971_11_2_a18,
     author = {I. V. Fryazinov},
     title = {A high-order accuracy scheme for the solution of the third boundary value problem for the equation $\Delta u-qu=-f$ in a rectangle},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {515--517},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1971_11_2_a18/}
}