@article{SJVM_2012_15_2_a12,
     author = {A. A. Kalinkin and Yu. M. Laevsky},
     title = {Iterative solver for systems of linear equations with a~sparse stiffness matrix for clusters},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {223--228},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2012_15_2_a12/}
}