@article{10_4007_annals_2011_173_2_15,
     author = {Ha{\"\i}m Brezis  and Hoai-Minh Nguyen},
     title = {On the distributional {Jacobian}  of maps from $\mathbb{S}^N$ into $\mathbb{S}^N$ in fractional {Sobolev} and {H\"older} spaces},
     journal = {Annals of mathematics},
     pages = {1141--1183},
     publisher = {mathdoc},
     volume = {173},
     number = {2},
     year = {2011},
     doi = {10.4007/annals.2011.173.2.15},
     mrnumber = {2776373},
     zbl = {05960682},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2011.173.2.15/}
}