Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Gary Marchionini, Gregory Crane. Evaluating Hypermedia and Learning: Methods and Results from the Perseus Project. ACM Trans. Inf. Syst., 12(1):5-34, 1994. [doi]
Abstract is missing.