Ellingson, R. G., and S. A. Clough, 1996: Report And Recommendations From The January 1996 IRF Workshop. ARM IRF Workshop, University of Maryland, College Park, MD, January 1996. (pdf document, html document)
Ellingson, R. G., 1996: The Intercomparison Of Radiation Codes Used In Climate Models (ICRCCM): Summary of a Workshop College Park, MD, 24-26 May 1995. Report to the International Radiation Commission, July 1995. (pdf document)
See also
http://metosrv2.umd.edu/~bobe/downloads
http://www.arm.gov/docs/research.html#vision2000