@article{AIHPC_2014__31_4_655_0,
     author = {Guti\'errez, Cristian E. and Huang, Qingbo},
     title = {The near field refractor},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {655--684},
     publisher = {Elsevier},
     volume = {31},
     number = {4},
     year = {2014},
     doi = {10.1016/j.anihpc.2013.07.001},
     mrnumber = {3249808},
     zbl = {1301.78001},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2013.07.001/}
}