@article{JMAG_1998_5_a10,
     author = {M. A. Shakirov},
     title = {The principal vector of line local distortion under the conformal mapping and its application},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {304--314},
     publisher = {mathdoc},
     volume = {5},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JMAG_1998_5_a10/}
}