Wymiana międzynarodowa:

 

1978 -1979 Visiting scholar, Kansas University, Lawrence, Kansas, USA.

1982 Visiting scholar, Oxford University, U.K.

1984 Visiting scholar, University of Konstanz , Germany.

1989-1993 Visiting profesor w St. Lawrence University, Canton, N.Y. USA

2001 - 2002 Fellowship, Center for Philosophy of Science, University of Pittsburgh, USA

2008 – Visiting professor, Duquesne University, Pittsburgh, USA

2012 – Visiting professor, Southern Illinois University, Carbondale, USA