@article{DAN_1960_135_3_a8,
     author = {I. B. Simonenko},
     title = {Riemann's boundary problem with a measurable coefficient},
     journal = {Doklady Akademii Nauk},
     pages = {538--541},
     year = {1960},
     volume = {135},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_3_a8/}
}