TY - JOUR AU - Swanson, C. A. TI - Semilinear Second Order Elliptic Oscillation JO - Canadian mathematical bulletin PY - 1979 SP - 139 EP - 157 VL - 22 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-021-0/ DO - 10.4153/CMB-1979-021-0 ID - 10_4153_CMB_1979_021_0 ER -