@article{10_4153_CJM_2011_085_7,
     author = {Gomes, Diogo and Serra, Ant\'onio},
     title = {Systems of {Weakly} {Coupled} {Hamilton-Jacobi} {Equations} with {Implicit} {Obstacles}},
     journal = {Canadian journal of mathematics},
     pages = {1289--1309},
     year = {2012},
     volume = {64},
     number = {6},
     doi = {10.4153/CJM-2011-085-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-085-7/}
}