@article{KUKZ_1972_9_9_a23,
     author = {L. I. Chibrikova and I. G. Salekhova},
     title = {The {Riemann} problem in the case of a countable set of contours},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {216--233},
     publisher = {mathdoc},
     volume = {9},
     number = {9},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1972_9_9_a23/}
}