共 6 条
[4]
计量经济学导论[M]. 中国人民大学出版社 , (美)J.M.伍德里奇(JeffreyM.Wooldridge)著, 2003
[5]
R&D Performance in Chinese industry[J] . Gary H. Jefferson,Bai Huamao,Guan Xiaojing,Yu Xiaoyun.Economics of Innovation and New Technology . 2006 (4-5)
[6]
On Estimation of a Probability Density Function and Mode[J] . Emanuel Parzen.The Annals of Mathematical Statistics . 1962 (3)