@article{DAN_1963_152_6_a0,
     author = {R. N. Abdulaev},
     title = {Solvability criteria for the homogeneous {Riemann} problem on closed {Riemann} surfaces},
     journal = {Doklady Akademii Nauk},
     pages = {1279--1281},
     publisher = {mathdoc},
     volume = {152},
     number = {6},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_152_6_a0/}
}