中国科学院数学与系统科学研究院期刊网
On a Conjecture on Fixed Point Indices of Positive Mappings in Cones
Dong Sheng LI,Kai Tai LI
Acta Mathematica Sinica, Chinese Series . 2003, (1): 1 -6 .  DOI: 10.12386/A2003sxxb0001