Geodesic
Linear central difference schemes with artifical diffusion for the equations of two-dimensional
Matematičeskoe modelirovanie, Tome 2 (1990) no. 1, pp. 40-48 Cet article a éte moissonné depuis la source Math-Net.Ru

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The scheme on five points and the locally-one-dimensional scheme are examined. An artifical diffusion for obtaining nonnegative electron concen tration is used. It is shown that the simulation results are practically the same, when the coefficient of artifical diffusion has different values. 
@article{MM_1990_2_1_a3,
     author = {G. Z. Garber},
     title = {Linear central difference schemes with artifical diffusion for the equations of two-dimensional},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {40--48},
     year = {1990},
     volume = {2},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_1_a3/}
}
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G. Z. Garber. Linear central difference schemes with artifical diffusion for the equations of two-dimensional. Matematičeskoe modelirovanie, Tome 2 (1990) no. 1, pp. 40-48. http://geodesic.mathdoc.fr/item/MM_1990_2_1_a3/