1. Billings, C. % Cheaney, E. (1981). Information transferprubleas in the aviation system (NASATech. Paper No. 1875). Moffett Field, CA: NASA Ames R-ch Center
2. Cardosi, K. & Boole, P. (1991). Analysis ofpila response time to the-criticrrl air tra@ control colh (Rep. NO. DOT/FAA/RD-91/20).
3. Casali, J. & Wierwille, W. A. (1983). A c o m w n of rating scale, secondary-task, physiological, and primary-task workload estimation techniques in a simulated flight task emphasizing communications load Humon Factors, 25,623-641.
4. Clark, H. & Brennan, S. (1990). Grounding in communication. In L Resmck, J. Levine, & S. Teasley (a), Socially s h a d cognition @p. 127-149). Washington, DC: American Psychological Association.
5. Collaborating on contributions to conversations