Video as an enabling technology for computer-supported cooperative work. - Marjorie S. Horton; Mary Elwart-Keys; Robert Kass (ACM SIGCHI Bull., 1989)

User interface requirements for face to face groupware. - Mary Elwart-Keys; David Halonen; Marjorie S. Horton; Robert Kass; Paul Scott 001 (CHI, 1990)