From the reviews: Collection of papers in honor of John Mylopoulos, an important contributor to many computer science fields. In recognition Mylopoulos' pioneering contributions to the conceptual modeling field, all 25 papers explore conceptual modeling as an important tool. ... While all of the contributions are of a high quality, 'On Non-Functional Requirements in Software Engineering' is an excellent and readable overview of the field. ... these papers 'are of lasting significance and could also be used to support a course on conceptual modeling. (M. D. Derk, ACM Computing Reviews, December, 2009)