%0 Book Section %B Design Requirements Engineering: A Ten-Year Perspective %D 2009 %T Understanding Requirements for Open Source Software %A Walt Scacchi %E Lyytinen, K. %E Loucopoulos, P. %E Mylopoulos, J. %E Robinson, W. %B Design Requirements Engineering: A Ten-Year Perspective %S Lecture Notes in Business Information Processing %I Springer-Verlag %V 14 %P 467-494 %G eng