@article{SJVM_2013_16_2_a5,
     author = {A. M. Matsokin},
     title = {Preconditioner for {a~Laplace} grid operator on a~condensed grid},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {165--170},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2013_16_2_a5/}
}