@article{ASENS_2015__48_4_951_0,
     author = {Auscher, Pascal and Ros\'en, Andreas and Rule, David},
     title = {Boundary value problems  for degenerate elliptic equations  and systems},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {951--1000},
     publisher = {Soci\'et\'e Math\'ematique de France. Tous droits r\'eserv\'es},
     volume = {Ser. 4, 48},
     number = {4},
     year = {2015},
     doi = {10.24033/asens.2263},
     mrnumber = {3377070},
     zbl = {1328.35049},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/asens.2263/}
}