TY - JOUR AU - Kreyszig, Erwin TI - Function Theoretic Integral Operator Methods for Partial Differential Equations(1) JO - Canadian mathematical bulletin PY - 1980 SP - 127 EP - 135 VL - 23 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1980-018-0/ DO - 10.4153/CMB-1980-018-0 ID - 10_4153_CMB_1980_018_0 ER -