References 吴崇试,《数学物理方法》,§20.4-20.6 ②梁昆淼,《数学物理方法》,§12.2,12.3 胡嗣柱、倪光炯,《数学物理方法》,§14.3, 14.4.14.6Green Function of Helmholtz Eq ... Green Functions for Time-Dependent Problems References ÇÂÁ§5êÆÔn{6§§20.4 — 20.6 ù&œ§5êÆÔn{6§§12.2, 12.3 nÎ!X1Á§5êÆÔn{6§§14.3, 14.4, 14.6 C. S. Wu 1›8ù Green¼ê()