@article{CRMATH_2005__341_2_107_0,
     author = {Birtea, Petre and Puta, Mircea},
     title = {On {Ishii's} equation},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {107--111},
     publisher = {Elsevier},
     volume = {341},
     number = {2},
     year = {2005},
     doi = {10.1016/j.crma.2005.06.010},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.crma.2005.06.010/}
}