@article{DE_1997_33_9_a15,
     author = {M. K. Bugir},
     title = {Multicontour problems for partial differential equations in spaces of constant curvature},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1288--1290},
     publisher = {mathdoc},
     volume = {33},
     number = {9},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_9_a15/}
}