Geodesic
Optimal grids for solution to the wave equation with variable coefficients
Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 8 (2005) no. 3, pp. 219-229

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This paper represents investigation of the method of constructing optimal grids. Extension of this method to the wave equation with variable coefficients and estimation of numerical solution obtained on optimal grids are also considered. The experiments presented illustrate a decrease of the time required for calculations. 
@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/}
}
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V. V. Lisitsa. Optimal grids for solution to the wave equation with variable coefficients. Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 8 (2005) no. 3, pp. 219-229. http://geodesic.mathdoc.fr/item/SJVM_2005_8_3_a3/