@article{DE_1993_29_7_a5,
     author = {E. N. Bobonova and V. V. Strygin},
     title = {The collocation method for linear singularly perturbed boundary value problems on nonuniform grids},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1144--1155},
     publisher = {mathdoc},
     volume = {29},
     number = {7},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_7_a5/}
}