1. Software Function, Source Lines of Code, and Development Effort Prediction: A Software Science Validation;Albrecht;IEEE Trans. Software Eng.,1983
2. A meta-model for software development resource expenditures;Bailey,1981
3. Software Engineering Economics;Boehm,1981
4. The impact of program and programmer characteristics on program size;Chrysler,1978
5. Software Engineering Metrics and Models;Conte,1986