%0 Journal Article %A Smith, Hart F. %A Sogge, Christopher D. %T Null form estimates for $(1/2,1/2)$ symbols and local existence for a quasilinear Dirichlet-wave equation %J Annales scientifiques de l'École Normale Supérieure %D 2000 %P 485-506 %V 33 %N 4 %I Elsevier %U http://archive.numdam.org/articles/10.1016/s0012-9593(00)00119-1/ %R 10.1016/s0012-9593(00)00119-1 %G en %F ASENS_2000_4_33_4_485_0