@article{DE_2006_42_7_a8,
     author = {A. N. Konovalov},
     title = {An adaptive upper relaxation method},
     journal = {Differencialʹnye uravneni\^a},
     pages = {943--950},
     publisher = {mathdoc},
     volume = {42},
     number = {7},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_7_a8/}
}