APL and Halstead's Theory: A Measuring Tool and Some Experiments. - Timo Laurmaa; Markku Syrjänen (SCORE (2), 1982)

Desktop Publishing on the Mainframe: Integrating APL2 and Ventura Publisher. - Timo Laurmaa (APL, 1990)

APL97: a review. - Timo Laurmaa (ACM SIGAPL APL Quote Quad, 1997)

Avoiding the pitfalls of corporate intranets. - Timo Laurmaa (APL, 2000)