1A. J. Albrecht. Measuring application development productivity. in Proc. IBM Applications Development Symp., GUIDE Int. and SHARE Inc., IBM Corp., Monterey, CA, 1979, 10: 83-92.
2A. J. Albrecht, J.E. Gaffney. Software function, source lines of code and development effort prediction: A software science validation, IEEE Trans. Software Eng, 1983,11: 629-649.
3The International function point users group. Function Point Counting Practices Manual ( Release 4.2 ) . 2004.
4C. R. Symons. Function point analysis: difficulties and improvements. IEEE Transactions on Software Engineering. 1988,14(1): 2-11.
5C.J. Lokan. An empirical analysis of function point adjustment factors. Technical report CS03/98, Australian defence force academy. 1998,12.