@article{MM_1991_3_8_a11,
     author = {P. N. Vabishchevich},
     title = {Numerical solution of elliptic boundary problems on composite grid},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {112--123},
     publisher = {mathdoc},
     volume = {3},
     number = {8},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1991_3_8_a11/}
}