@article{IVM_2006_2_a7,
     author = {G. I. Shishkin},
     title = {Richardson's method for increasing the accuracy of difference solutions of singularly perturbed elliptic convection-diffusion equations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {57--71},
     publisher = {mathdoc},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2006_2_a7/}
}