中国科学院数学与系统科学研究院期刊网
ATTRACTIVE INVARIANT TORUS AND KNOTTED PERIODIC ORBITS IN A THREE-DIMENSIONAL FLOW
Li Ji-bin, Zhu Zhao-xuan
Acta Mathematicae Applicatae Sinica . 1991, (1): 1 -6 .  DOI: 10.12387/C1991001