@article{JEMS_2015_17_9_a0,
     author = {Jean Bourgain and Ha{\"\i}m Brezis and Petru Mironescu},
     title = {A new function space and applications},
     journal = {Journal of the European Mathematical Society},
     pages = {2083--2101},
     publisher = {mathdoc},
     volume = {17},
     number = {9},
     year = {2015},
     doi = {10.4171/jems/551},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/551/}
}