Geodesic
The support operator method for elliptical and parabolic boundary problems with discontinuous coefficients in anisotropic media
Matematičeskoe modelirovanie, Tome 19 (2007) no. 5, pp. 105-115

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The work deals with elliptical and parabolic-type equations with discontinuous coefficients in anisotropic media. The support operator method is used to create a difference scheme. Approximation and convergence are investigated and mathematical modelling results are given. 
@article{MM_2007_19_5_a8,
     author = {A. Kh. Pergament and V. A. Semiletov},
     title = {The support operator method for elliptical and parabolic boundary problems with discontinuous coefficients in anisotropic media},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {105--115},
     publisher = {mathdoc},
     volume = {19},
     number = {5},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2007_19_5_a8/}
}
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A. Kh. Pergament; V. A. Semiletov. The support operator method for elliptical and parabolic boundary problems with discontinuous coefficients in anisotropic media. Matematičeskoe modelirovanie, Tome 19 (2007) no. 5, pp. 105-115. http://geodesic.mathdoc.fr/item/MM_2007_19_5_a8/