TY - JOUR AU - Jiroušková, Marie TI - Distribution of zeros of solutions of certain periodic differential equations JO - Archivum mathematicum PY - 1977 SP - 97 EP - 103 VL - 13 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1977__13_2_a4/ LA - en ID - ARM_1977__13_2_a4 ER -