@article{AIHPC_2017__34_4_899_0,
     author = {Caffarelli, L. and De Silva, D. and Savin, O.},
     title = {The two membranes problem for different operators},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {899--932},
     publisher = {Elsevier},
     volume = {34},
     number = {4},
     year = {2017},
     doi = {10.1016/j.anihpc.2016.05.006},
     mrnumber = {3661864},
     zbl = {1368.35045},
     language = {en},
     url = {http://www.numdam.org./articles/10.1016/j.anihpc.2016.05.006/}
}