@article{IVM_1961_6_a13,
     author = {L. I. Chibrikova},
     title = {The {Riemann} boundary-value problem for automorphic functions in the case of groups with two invariants},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {121--131},
     publisher = {mathdoc},
     number = {6},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1961_6_a13/}
}