TY - JOUR AU - Tohru Ozawa AU - Y. Tsutsumi AU - K. Tsutaya TI - Global existence and asymptotic behavior of solutions for the Klein-Gordon equations with quadratic nonlinearity in two space dimensions. JO - Mathematische Zeitschrift PY - 1996 SP - 341 EP - 362 VL - 222 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1996__222_3_174888/ ID - MZ_1996__222_3_174888 ER -