TY - JOUR AU - Wang, Da-Bin TI - Positive Solutions of Impulsive Dynamic System on Time Scales JO - Canadian mathematical bulletin PY - 2012 SP - 214 EP - 224 VL - 55 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-125-1/ DO - 10.4153/CMB-2011-125-1 ID - 10_4153_CMB_2011_125_1 ER -