Semantic evaluation of the components of Ledley and Lusted's diagnostic model Ladislav Tondl — 1972 Kybernetika
Semantic evaluation of prognostic statements on the base of probabilistic parameters Ladislav Tondl — 1974 Kybernetika
Sixty years of cybernetics: the philosophical foundations of cybernetics Ladislav Tondl — 2008 Kybernetika