TY - JOUR AU - Ryszard Deszcz TI - On four-dimensional Riemannian warped product manifolds satisfying certain pseudo-symmetry curvature conditions JO - Colloquium Mathematicum PY - 1991 SP - 103 EP - 120 VL - 62 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-62-1-103-120/ DO - 10.4064/cm-62-1-103-120 LA - en ID - 10_4064_cm_62_1_103_120 ER -