TY - JOUR AU - Datko, R. TI - Integrals of the Differential Equations ẍ + f ( s ) x = 0 JO - Canadian mathematical bulletin PY - 1967 SP - 191 EP - 196 VL - 10 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-017-2/ DO - 10.4153/CMB-1967-017-2 ID - 10_4153_CMB_1967_017_2 ER -