[i] Scott W. Ambler,(November 28, 2000),《The Design of a Robust Persistence Layer For Relational Databases》,http://www.ambysoft.com/persistenceLayer.pdf
[ii] Philip Brown,《Implementing Business Objects》,news://news.Borland.com
[iii] Joanna Carter,《Persistence Brings Success》
[iv] Peter Hinrichsen,2001,《Rolling your own Object Persistence Framework》,BorCon Asia Pacific 2001