Additional Resources

Boehm, Barry, et al. Software Cost Estimation with Cocomo II. Reading, MA: Addison-Wesley, 2000. This book is the definitive description of Cocomo II. The book's size is daunting, but it describes the basic Cocomo model within the first 80 pages, including detailed definitions of the effort multipliers and scaling factors discussed in this chapter and how Cocomo II accounts for diseconomies of scale. The rest of the book describes extensions of the model.

Putnam, Lawrence H. and Ware Myers. Measures for Excellence: Reliable Software On Time, Within Budget. Englewood Cliffs, NJ: Yourdon Press, 1992. This book describes Putnam's estimation method including how it addresses diseconomies of scale. I like Putnam's model because it contains few control knobs and works best when it is calibrated with historical data. The book is mathematically oriented, so it can be slow going.