Publications
“The Creative Growth Of Mathematics”. Philosophica 63: 119–152.
. 1999. 
“Deductive And Ampliative Adaptive Logics As Tools In The Study Of Creativity”. Foundations of Science 4: 325–336.
. 1999. 
“The Early Positivists' Approach To Scientific Discovery”. Philosophica 64: 81–108.
. 1999. 
“Embedding And Interpolation For Some Paralogics. The Propositional Case”. Reports on Mathematical Logic 33: 29–44.
. 1999. 
“Erotetic Arguments From Inconsistent Premises”. Logique et Analyse 42: 49–80.
. 1999. 
“A Formal Analysis Of Diagnosis And Diagnostic Reasoning”. Logique et Analyse 42: 161–180.
. 1999. 
“Inconsistency-Adaptive Logics” . Logic at Work. Essays Dedicated to the Memory of Helena Rasiowa: 445–472.
. 1999. 
“Introduction.”. FOUNDATIONS OF SCIENCE 3: 231–234.
. 1999. 
“Linguistic And Ontological Measures For Comparing The Inconsistent Parts Of Models”. Logique et Analyse 42: 5–33.
. 1999. 
“Minimizing Ambiguity And Paraconsistency.”. Logique et Analyse 42: 39–160.
. 1999. 
“Model-Based Reasoning In Creative Processes” . Model-Based Reasoning in Scientific Discovery: 199–217.
. 1999. “Oorlog En Vrede In Wetenschapsland” . Denken als Openheid. Liber Amicorum Hubert Dethier: 153-160.
. 1999. “Paraconsistency And Its Relation To Worldviews”. Foundations of Science 3: 259–283.
. 1999. 

“Radicaal Atheïsme” . Wat met God?: 129–162.
. 1999. 

“Rationality In The Discovery Of Empirical Laws”. Foundations of Science 4: 355–368.
. 1999. 
“Scientific Revolutions, Rationality And Creativity”. Philosophica 64: 109–128.
. 1999. 

“Unification: What Is It, How Do We Reach And Why Do We Want It?”. Synthese 118: 479–499.
. 1999. 
“World Models And Inconsistencies.”. Foundations of Science 3: 285–311.
. 1999. 
“Zero Logic Adding Up To Classical Logic”. Logical Studies 2: 15.
. 1999. 
“On The Acceptance Of Problem Solutions Derived From Inconsistent Constraints”. Logic and Logical Philosophy 8: 33–46.
. 2000. 
“The Adaptive Logic Of Compatibility”. Studia Logica 66: 327–348.
. 2000. 
“Alternative Mathematics: The Vague Way.” . Festschrift in honor of Newton C.A. da Costa on the occasion of his seventieth birthday 125: 19–31.
. 2000. 
“Analogical Reasoning In Creative Problem Solving Processes: Logico-Philosophical Perspectives” . Metaphor and Analogy in the Sciences: 17–34.
. 2000. 
“Analogy And Metaphor As Essential Tools For The Working Mathematician” . Metaphor and Analogy in the Sciences: 105–123.
. 2000. 
“De Eenheid Van De Inhoud” . Natuurfilosofie. Voorbereidend werk voor een op de fysica gebaseerde ontologie: 9-35.
. 2000.