%0 Journal Article %A M. A. Lavrent'ev %A P. P. Belinskii %T Certain problems of geometric function theory %J Informatics and Automation %D 1972 %P 34-40 %V 128 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1972_128_a2/ %G ru %F TRSPY_1972_128_a2