@article{PMIHES_2015__121__113_0,
     author = {Astala, Kari and Iwaniec, Tadeusz and Prause, Istv\'an and Saksman, Eero},
     title = {Bilipschitz and quasiconformal rotation, stretching and multifractal spectra},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {113--154},
     publisher = {Springer Berlin Heidelberg},
     address = {Berlin/Heidelberg},
     volume = {121},
     year = {2015},
     doi = {10.1007/s10240-014-0065-6},
     language = {en},
     url = {http://www.numdam.org/articles/10.1007/s10240-014-0065-6/}
}