1. Cheng, B., Atlee, J.: Research Directions in Requirements Engineering. In: Future of Software Engineering (FOSE 2007). IEEE Computer Society, Los Alamitos (2007)
2. Regnell, B., Brinkkemper, S.: Market-Driven Requirements Engineering for Software Products. In: Aurum, A., Wohlin, C. (eds.) Engineering and Managing Software Requirements, pp. 287–308. Springer, Heidelberg (2005)
3. Ebert, C.: Software Product Management. Crosstalk 22, 15–19 (2009)
4. Karlsson, L., Dahlstedt, Å., Regnell, B., Natt Och Dag, J., Persson, A.: Requirements engineering challenges in market-driven software development - An interview study with practitioners. Information and Software Technology 49, 588–604 (2007)
5. Messerschmitt, D., Szyperski, C.: Software Ecosystem: Understanding an Indispensable Technology and Industry. The MIT Press, London (2003)