CASPER. - William A. Rux; Eric Baelen (APL, 1974)

Corporate application of APL - case studies (panel). - Eric Baelen; Bion B. Bierer; Stephen B. Jaffe; Anthony R. Lantz; Lynne C. Shaw (APL, 1985)

Performance enhancers (tutorial session). - Eric Baelen; Kevin R. Weaver; Roy Sykes Jr.; Robert Lauer (APL Session Tutorials, 1989)

Creating Excel worksheets in APL+Win. - Eric Baelen (ACM SIGAPL APL Quote Quad, 2002)

Using Excel as a front end to APL+Win. - Eric Baelen (ACM SIGAPL APL Quote Quad, 2003)