@article{AFM_1985_10_1_a21,
     author = {F. W. Gehring and O. Martio},
     title = {Lipschitz classes and quasiconformla mappings},
     journal = {Annales Fennici Mathematici},
     pages = {203--219},
     year = {1985},
     volume = {10},
     number = {1},
     doi = {10.5186/aasfm.1985.1022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1985.1022/}
}