@book{TUW-139545, editor = {Biffl, Stefan and Aurum, Ayb{\"u}ke and Boehm, Barry W. and Erdogmus, Hakan and Gr{\"u}nbacher, Paul}, title = {Value-Based Software Engineering}, publisher = {Springer}, year = {2005}, address = {Berlin Heidelberg}, isbn = {3-540-25993-7} }