1Magne Jorgensen.Experience With the Accuracy of Software Maintenance Task Effort Prediction Models[J].IEEE transaction on Software Engineering, 1995 ;21 (8) :674-681.
2Software Design for Maintainability.Technique DFE-6.NASA TM4628A"Recommended Techniques for Effective Maintainability".http://www.hq.nasa.gov.
4Magne Jorgensen. Experience With the Accuracy of Software Maintenance Task Effort Prediction Models. IEEE transaction on Software Engineering. 1995,21(8):674-681.
5Software Design for Maintainability. Technique DEE-6. NASA TM4628A “Recommended Techniques for Effective Maintainability”. http://www.hq.nasa.gov.
6Software Maintainability Evaluation Guide. AFOTEC PAMPHLET99102,Volume 3, 1 September 1996.