References 吴崇试,《数学物理方法》,§3.1-3.4Complex Integration Cauchy Integral Theorems Two Useful Lemmas References ÇÂÁ§5êÆÔn{6§§3.1 — 3.4 ù&œ§5êÆÔn{6§§2.1 — 2.3 nÎ!X1Á§5êÆÔn{6§§2.1 — 2.3 C. S. Wu 1où ECÈ©()