@article{DE_1998_34_1_a13,
     author = {A. N. Zarubin},
     title = {An initial-boundary value problem for an equation of mixed type with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {87--93},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_1_a13/}
}