TY - JOUR AU - Shupei Wang TI - A note on the oscillation theory of certain second order differential equations JO - Annales Fennici Mathematici PY - 1995 SP - 379 EP - 385 VL - 20 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AFM_1995_20_2_a13/ LA - en ID - AFM_1995_20_2_a13 ER -