@article{MZM_1994_55_6_a3,
     author = {A. A. Golubev and V. G. Sheretov},
     title = {Quasiconformal extremals of the energy integral},
     journal = {Matemati\v{c}eskie zametki},
     pages = {50--58},
     publisher = {mathdoc},
     volume = {55},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_55_6_a3/}
}