1[1]Andreas Mauthe,Peter Thomas.Professional Content Management Systems:Handling Digital Media Assets[M].John Wiley & Sons Ltd.,2004.
2[2]Erick K C,Karl R L.The Decoupling of Value Creation from Revenue:A Strategic Analysis of the Markets for Pure Information Goods[J].Journal of Information Technology and Management 2003,(4):259-287.
3[3]Keith Kocho.Content Service Management:Turning Digital Assets I1nto Commercial Services[J].Journal of Digital Asset Management.Vol.1,Issue 6,2005.