共 73 条
[61]
Vogelsang I, 1999, TELECOMMUN, pXIII
[62]
WATERS R, 2001, INVESTORS BUSIN 0718, P15
[63]
WEINHAUS CL, 1988, TELEPHONE DEBATES
[64]
WILKE J, 1997, WALL STREET J 0425, pA4
[65]
WILKE JR, 1997, WALL ST J 0923, pA3
[66]
Wolf M. J, 2002, WALL STREET J, pA18
[67]
YOUNG S, 2004, WALL STREET J 0402, pC1
[68]
YOUNG S, 2005, WALL STREET J 0721, pB5
[69]
YOUNG S, 2004, WALL STREET J 1004, pC3
[70]
ZHANG JG, 2003, HLTH SCI, V19, P37