Mechanising some Advanced Refinement Concepts. - Joakim von Wright; Jukka Hekanaho; P. Luostarinen; Thomas Långbacka (TPHOLs, 1992)

Mechanizing Some Advanced Refinement Concepts. - Joakim von Wright; Jukka Hekanaho; P. Luostarinen; Thomas Långbacka (Formal Methods Syst. Des., 1993)

Symbiosis in Multimodal Concept Learning. - Jukka Hekanaho (ICML, 1995)

Background Knowledge in GA-based Concept Learning. - Jukka Hekanaho (ICML, 1996)

GA-Based Rule Enhancement in Concept Learning. - Jukka Hekanaho (KDD, 1997)

DOGMA: A GA-Based Relational Learner. - Jukka Hekanaho (ILP, 1998)