This book constitutes the strictly refereed post-workshop proceedings of the International Workshop on Requirements Targeting Software and Systems Engineering, RTSE '97, held in Bernried, Germany in October 1997. The 15 revised full papers presented in the book were carefully revised and reviewed for inclusion in the book. Among the authors are internationally leading researchers. The book is divided in sections on foundations of software engineering, methodology, evaluation and case studies, and tool support and prototyping.