TY - JOUR AU - DING, CHANGMING TI - BOUNDED ORBITS OF POSITIVELY BOUNDED SYSTEMS JO - Glasgow mathematical journal PY - 2004 SP - 37 EP - 45 VL - 46 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089503001502/ DO - 10.1017/S0017089503001502 ID - 10_1017_S0017089503001502 ER -