@article{VTGU_2013_3_a0,
     author = {I. A. Aleksandrov},
     title = {About estimation of the curvature of level lines under conformal mappings},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {5--7},
     publisher = {mathdoc},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2013_3_a0/}
}