4Geronimo V A,Aragon C. Resource sharing in university libraries: A tool for information interchange[J], Library Collec-tions, Acquisitions,and Technical Services. 2005, 29(4) : 425 - 432.
5Heery R, Anderson S. Digital Repositories Review[EB/OL]. http://www.jisc.ac.uk/uploaded_ documents /digital-re-positories- review-2005.pdf , 2005.
