"This book shows how the best practitioners can become even better. It assembles 15 valuable research papers, contributed by 51 experts ... presented at workshops between 2008 and 2013. ... this assemblage and its contributing community are a valuable resource to those interested in advancing the state of the art." (Sushil Birla, Computing Reviews, October, 2015) "This book delivers exciting insights into the benefits and use of knowledge technology for requirements engineering". Barbara Paech, University of Heidelberg, Germany; Spokeswoman of the SIG "Software Engineering" in the German Computer Science Society (GI) "Managing requirements knowledge lies at the heart of understanding stakeholder's needs and building software systems that address those needs. This book assembles key research contributions that will serve as an invaluable resource for researchers and enlightened practitioners in the area." Bashar Nuseibeh, The Open University, UK; Editor-in-Chief of IEEE Transactions on Software Engineering