@article{MM_1990_2_9_a9,
     author = {P. A. Krutitskii},
     title = {On the {Riemann{\textendash}Hilbert} problem and the oblique derivative problem at the plane with sections along the circumference},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {114--123},
     year = {1990},
     volume = {2},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_9_a9/}
}