@article{DE_1990_26_7_a17,
     author = {A. A. Samarskii and V. L. Makarov},
     title = {Realization of exact three-point difference schemes for second-order ordinary differential equations with piecewise-smooth coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1254--1265},
     year = {1990},
     volume = {26},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_7_a17/}
}