@article{TRSPY_1934_5_a13,
     author = {M. Lavrent'ev},
     title = {On the theory of conformal mappings},
     journal = {Informatics and Automation},
     pages = {159--245},
     publisher = {mathdoc},
     volume = {5},
     year = {1934},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a13/}
}