@article{10_4171_ifb_127,
     author = {Assis Azevedo and Jos\'e Francisco Rodrigues and Lisa Santos},
     title = {The $N$-membranes problem for quasilinear degenerate systems},
     journal = {Interfaces and free boundaries},
     pages = {319--337},
     year = {2005},
     volume = {7},
     number = {3},
     doi = {10.4171/ifb/127},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/127/}
}