中国科学院数学与系统科学研究院期刊网
JSSC
THE STRICT POSITIVITY IN A NONSTANDARD HULL AND ITS APPLICATIONS TO ECONOMICS
WU Kangping
THE STRICT POSITIVITY IN A NONSTANDARD HULL AND ITS APPLICATIONS TO ECONOMICS
WU Kangping
Journal of Systems Science and Complexity . 1997, (2): 97 -105 .