@article{AFM_1983_8_2_a4,
     author = {Maire Kiikka},
     title = {Diffeomorphic approximation of quasiconformal and quasisymmetric homeomorphisms},
     journal = {Annales Fennici Mathematici},
     pages = {251--256},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1983},
     doi = {10.5186/aasfm.1983.0814},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0814/}
}