@article{DE_1978_14_9_a20,
     author = {B. F. Bylov and V. S. Ermolin},
     title = {A comparison of the properties of the solutions of a quasi-triangular and a quasi-diagonal system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1696--1697},
     publisher = {mathdoc},
     volume = {14},
     number = {9},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_9_a20/}
}