APL Programming without Tears: It is Time for a Change. - Peter Naeve; Bernhard Strohmeier; Hans Peter Wolf (APL, 1993)

Concrete Multidimensional Statistics in APL2. - Bernhard Strohmeier (APL, 1995)

On factorization of probability distributions over directed graphs. - Frantisek Matús; Bernhard Strohmeier (Kybernetika, 1998)