@article{SM_1973_19_1_a5,
     author = {M. A. Evgrafov},
     title = {A~variant of a~theorem of {Ahlfors} on mappings of strips},
     journal = {Sbornik. Mathematics},
     pages = {95--104},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1973_19_1_a5/}
}