@article{SJVM_2005_8_3_a3,
     author = {V. V. Lisitsa},
     title = {Optimal grids for solution to the wave equation with variable coefficients},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {219--229},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2005_8_3_a3/}
}