@article{10_2307_121020,
     author = {Serge Alinhac},
     title = {Blowup of small data solutions for a quasilinear wave equation in two space dimensions.},
     journal = {Annals of mathematics},
     year = {1999},
     volume = {149},
     number = {1},
     doi = {10.2307/121020},
     zbl = {1080.35043},
     url = {http://geodesic.mathdoc.fr/articles/10.2307/121020/}
}