User interface design in the trenches: some tips on shooting from the hip. - Robert M. Mulligan; Mark W. Altom; David K. Simkin (CHI, 1991)

Designing Usable Systems Under Real-World Constraints: A Practitioners Forum. - Robert M. Mulligan; Mary Dieli; Jakob Nielsen; Steven E. Poltrock; Daniel Rosenberg; Susan Erlich Rudman (CHI, 1992)