@article{10_1090_S0894_0347_01_00375_7,
     author = {Tataru, Daniel},
     title = {Strichartz estimates for second order hyperbolic operators with nonsmooth coefficients {III}},
     journal = {Journal of the American Mathematical Society},
     pages = {419--442},
     year = {2002},
     volume = {15},
     number = {2},
     doi = {10.1090/S0894-0347-01-00375-7},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-01-00375-7/}
}