@article{AIHPC_2021__38_3_577_0,
     author = {Guti\'errez, Cristian E. and Tournier, Federico},
     title = {                             $C^{1 , \alpha}$-estimates for the near field refractor},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {577--600},
     publisher = {Elsevier},
     volume = {38},
     number = {3},
     year = {2021},
     doi = {10.1016/j.anihpc.2020.08.002},
     mrnumber = {4227046},
     zbl = {1462.78004},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2020.08.002/}
}