1. Böckle, G., Clements, P., McGregor, J.D., Muthig, D., Schmid, K.: Calculating ROI for Software Product Lines. IEEE Software (May/June 2004)
2. Boehm, B., Abts, C., Brown, A.W., Chulani, S., Clark, B.K., Horowitz, E., Madachy, R., Reifer, D., Steece, B.: Software Cost Estimation with COCOMO II. Prentice-Hall, Englewood Cliffs (2000)
3. Boehm, B.: Software engineering economics. Prentice-Hall, Englewood Cliffs (1981)
4. Boehm, B., Brown, A.W., Madachy, R., Yang, Y.: A Software Product Line Life Cycle Cost Estimation Model. In: Proceedings of the International Symposium on Empirical Software Engineering (ISESE 2004), pp. 156–164 (2004)
5. Chen, Y., Gannod, G.C., Collofello, J.S.: Software Product Line Process Simulator. In: 6th Int. Workshop on Software Process Simulation and Modeling (May 2005)