@article{DAN_1958_119_5_a13,
     author = {W. Schmidt},
     title = {A generalized {Riemann--Hilbert} problem in the case of a negative exponent},
     journal = {Doklady Akademii Nauk},
     pages = {893--895},
     publisher = {mathdoc},
     volume = {119},
     number = {5},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_119_5_a13/}
}