Size and effort is all what matters eventually :-). Estimation of work is really a tricky job. Here are a few resources I think a good start point to gather estimation techniques: Books and papers o Brooks, F., The Mythical Man Month, Addison-Wesley o COCOMO II Model Definition Manual, University of Southern California, 1991 (for more information visit \\.sunset.usc.edu/cse/) o Institute of Electrical and Electronic Engineers Inc., Glossary of Software Engineering Terminology, IEEE Std 610.12-1990,...