TY - JOUR AU - Regenda, Ján TI - A note on oscillation and nonoscillation criteria for fourth order linear differential equations JO - Mathematica slovaca PY - 1983 SP - 297 EP - 302 VL - 33 IS - 3 UR - http://geodesic.mathdoc.fr/item/MASLO_1983_33_3_a5/ LA - en ID - MASLO_1983_33_3_a5 ER -