@article{AIHPC_2001__18_5_519_0,
     author = {Iwaniec, Tadeusz and Sbordone, Carlo},
     title = {Quasiharmonic fields},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {519--572},
     publisher = {Elsevier},
     volume = {18},
     number = {5},
     year = {2001},
     mrnumber = {1849688},
     zbl = {1068.30011},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_2001__18_5_519_0/}
}