@article{VTGU_2013_6_a0,
     author = {I. A. Aleksandrov and S. A. Kopanev},
     title = {The problem of estimating the curvature of the level line under conformal mappings of a~circle},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {5--17},
     publisher = {mathdoc},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2013_6_a0/}
}