@article{SM_1970_10_4_a7,
     author = {V. A. Zorich},
     title = {An isolated singularity of mappings with bounded distortion},
     journal = {Sbornik. Mathematics},
     pages = {581--583},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1970_10_4_a7/}
}