中国科学院数学与系统科学研究院期刊网
AMS
A Note on Weakly Isotone Maps and Common Solutions for Differential Systems
Giuseppe MARINO, Vittorio COLAO, Luigi MUGLIA
Acta Mathematica Sinica . 2006, (4): 1171 -1174 .  DOI: 10.1007/s10114-005-0643-0