Viewpoints as an evolutionary approach to software system maintenance. - Paulo S. C. Alencar; Donald D. Cowan; Torsten Nelson; Carlos José Pereira de Lucena (ICSM, 1997)

A Model for Describing Object-Oriented Systems from Multiple Perspectives. - Torsten Nelson; Donald D. Cowan; Paulo S. C. Alencar (FASE, 2000)

Supporting Formal Verification of Crosscutting Concerns. - Torsten Nelson; Donald D. Cowan; Paulo S. C. Alencar (Reflection, 2001)

User's manual as a requirements specification: case studies. - Daniel M. Berry; Khuzaima Daudjee; Jing Dong 005; Igor Fainchtein; Maria Augusta V. Nelson; Torsten Nelson; Lihua Ou (Requir. Eng., 2004)

An approach to formal automated analysis of problem-frame concerns. - Maria Augusta V. Nelson; Torsten Nelson; Paulo S. C. Alencar; Donald D. Cowan (Inf. Softw. Technol., 2005)