@article{AFM_1995_20_2_a0,
     author = {Seppo Rickman},
     title = {Defect relation and its realization for quasiregular mappings},
     journal = {Annales Fennici Mathematici},
     pages = {207--243},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_1995_20_2_a0/}
}