Thomas P. Kehler, Mike Barnes. Alternatives for on-line help systems. In Jean C. Bonney, Elizabeth R. Little, Rita Seplowitz Saltz, editors, Proceedings of the 8th annual ACM SIGUCCS conference on User services, Morgantown, West Virginia, USA, November 16-19, 1980. pages 99-103, ACM, 1980. [doi]
Abstract is missing.