Constructing a dialogic framework for software development. - Anthony Finkelstein; Hugo Fuks; Celso Niskier; Martin Sadler (ISPW, 1988)

Viewpoint Oriented Software Development: Mehtods and Viewpoints in Requirements Engineering. - Anthony Finkelstein; Michael Goedicke; Jeff Kramer; Celso Niskier (Algebraic Methods, 1989)

A Pluralistic Knowledge-Based Approach to Software Specification. - Celso Niskier; T. S. E. Maibaum; Daniel Schwabe 001 (ESEC, 1989)

A look through PRISMA: towards pluralistic knowledge-based environments for software specification acquisition. - Celso Niskier; Tom Maibaum; Daniel Schwabe 001 (IWSSD, 1989)