@article{EJDE_2003__2003__a61,
     author = {Sabl\'e-Tougeron, Monique},
     title = {Non-classical phase transitions at a sonic point},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2003},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a61/}
}