@article{AIHPC_2015__32_5_965_0,
     author = {Mironescu, Petru and Molnar, Ioana},
     title = {Phases of unimodular complex valued maps: optimal estimates, the factorization method, and the sum-intersection property of {Sobolev} spaces},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {965--1013},
     publisher = {Elsevier},
     volume = {32},
     number = {5},
     year = {2015},
     doi = {10.1016/j.anihpc.2014.04.005},
     mrnumber = {3400439},
     zbl = {1339.46037},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2014.04.005/}
}