The IBM personal computer APL system. - Maria L. Tavera; Manuel Alfonseca 001; Juan Rojas 002 (APL, 1984)

An APL System for the IBM Personal Computer. - Maria L. Tavera; Manuel Alfonseca 001; Juan Rojas 002 (IBM Syst. J., 1985)

An Expert System in Chemical Synthesis Written in APL2/PC. - P. Rodriguez; Juan Rojas 002; Manuel Alfonseca 001; J. I. Burgos (APL, 1989)