Cheryl Rodgers, Lynn L. Peterson, Donnell Payne. An active hypertext path mechanism in a cooperative problem solving environment (abstract only). In C. Jinshong Hwang, Richard S. Brice, editors, Proceedings of the 19th annual conference on Computer Science, CSC '91, San Antonio, Texas, USA, March 4-7, 1991. pages 682, ACM, 1991. [doi]
Abstract is missing.