@article{TRSPY_1972_128_a2,
     author = {M. A. Lavrent'ev and P. P. Belinskii},
     title = {Certain problems of geometric function theory},
     journal = {Informatics and Automation},
     pages = {34--40},
     publisher = {mathdoc},
     volume = {128},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1972_128_a2/}
}