TY - JOUR AU - Burton, T. A. TI - Some General Instability Criteria for Ordinary Differential Equations JO - Canadian mathematical bulletin PY - 1965 SP - 453 EP - 457 VL - 8 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-031-0/ DO - 10.4153/CMB-1965-031-0 ID - 10_4153_CMB_1965_031_0 ER -