@article{10_4153_CMB_2010_100_0,
     author = {Hyt\"onen, Tuomas P.},
     title = {On the {Norm} of the {Beurling{\textendash}Ahlfors} {Operator} in {Several} {Dimensions}},
     journal = {Canadian mathematical bulletin},
     pages = {113--125},
     year = {2011},
     volume = {54},
     number = {1},
     doi = {10.4153/CMB-2010-100-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2010-100-0/}
}