1Branin J, Groen F, Thorin S.The changing nature of collection management in research Libraries[J]. Library Resources and Technical Services. 2000,44(1) :23 - 25.
2Joseph Pine Ⅱ B, Peppers D, Rogers M . Do you want to keepyour customers forever[J]. Harward Business Review, 1995,74(2) : 103 -112.
3Branin J,Groen F,Thorin S.The changing nature of collection management in research Libraries[J].Library Resources and Technical Services,2000,44(1):23-25.
4Joseph Pine Ⅱ B,Peppers D,Rogers M.Do you want to keepyour customers forever[J].Harward Business Review,1995,74(2):103-112.