The Diana Interfacer. - Teri F. Payton; Steven E. Keller; John A. Perkins; S. P. Mardinly (Ada Software Tools Interfaces, 1983)

Tree transformation techniques and experiences. - Steven E. Keller; John A. Perkins; Teri F. Payton; S. P. Mardinly (SIGPLAN Symposium on Compiler Construction, 1984)

Ada measurement based on software quality principles. - Steven E. Keller; John A. Perkins (WADAS, 1985)

Grammar-based program transformation. - Steven E. Keller (ICSM, 1988)

Layering and multiple views of data abstraction in Ada: techniques and experiences. - Steven E. Keller; John A. Perkins; Kevin O'Leary (TRI-Ada, 1989)