1. J.W. Bailey and V.R. Basili. A meta-model for software devel-opment resource expenditures. Proc. Fifth Int. Conf. Software Engineering, pages 107–116, 1981.
2. A.L. Baker, J.M. Bieman, N. E. Fenton, A. C. Melton, and R.W. Whitty. A philosophy for software measurement. Journal of Systems and Software, 12 (3): 277–281, July 1990.
3. B. W. Boehm. Software Engineering Economics. Prenntice-Hall, Englewood Cliffs, NJ, 1981.
4. G. Booch. Object Oriented Design with Applications. Ben-jamin, Cummings, 1991.
5. S.D. Conte, H.E. Dunsmore, and V.Y. Shen. Software Engineering Metrics and Models. Benjamin, Cummings, Menlo Park, California, 1986.