@article{AIHPA_1999__71_2_199_0,
     author = {Nakamura, M. and Ozawa, T.},
     title = {The {Cauchy} problem for nonlinear wave equations in the homogeneous {Sobolev} space},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {199--215},
     publisher = {Gauthier-Villars},
     volume = {71},
     number = {2},
     year = {1999},
     mrnumber = {1705131},
     zbl = {0960.35066},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1999__71_2_199_0/}
}