TY - JOUR AU - Zhonghuai Wu AU - Jianying Shao AU - Mingquan Yang AU - Wei Gao TI - Permanence and global exponential stability of Nicholson-type delay systems JO - Annales Polonici Mathematici PY - 2011 SP - 205 EP - 211 VL - 102 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap102-3-1/ DO - 10.4064/ap102-3-1 LA - en ID - 10_4064_ap102_3_1 ER -