Flexible Diff-ing in a Collaborative Writing System. - Christine Neuwirth; Ravinder Chandhok; David Kaufer; Paul Erion; James H. Morris; Dale Miller 001 (CSCW, 1992)

Annotations are not "for free": The Need for Runtime Layer Support in Hypertext Engines. - Christine M. Neuwirth; Ravinder Chandhok; David Kaufer; James H. Morris; Paul Erion; Dale Miller 001 (Designing User Interfaces for Hypermedia, 1995)