共 10 条
[7]
模糊集与随机集落影[M]. 北京师范大学出版社 , 汪培庄 著, 1985
[8]
Conjoint analysis of demand for IP telephony: the case of Japan[J] . Takanori Ida,Shin Kinoshita,Masayuki Sato.Applied Economics . 2008 (10)
[9]
On the multiplicity of Dini subgradients in separable spaces[J] . Philip D. Loewen,Xianfu Wang.Nonlinear Analysis . 2004 (1)