University of Freiburg (since 2019, plasma induced apoptosis of cancer cells)
University of Padova, Italy (since 2017)
Ruhr University Bochum, Germany (since 2016)
Lublin University of Technology, Poland (since 2014)
Alexandru Ioan Cuza University of Iasi, Romania (since 2013, APVV SK-RO bilateral project)
University of California, Berkeley, USA (since 2013)
AIST Tsukuba, Japan (since 2013)
INP Leibnitz Institute (ZIK Plasmatis) Greifswald, Germany (since 2012)
Supélec, France (since 2012, common supervision of a PhD. student Z. Kovalova)
Institute of Plasma Physics, AS CR Prague, Czech Rep. (since 2010, APVV SK-CZ bilateral project)
Toyohashi University of Technology, Japan (since 2005, APVV project)
Ecole Centrale Paris, France (since 2004, APVV SK-FR bilateral project Štefánik)
University of Minnesota, USA (2002-2005, APVT SK-US bilateral project)
Leopold-Franzens University Innsbruck, Austria (2001-2006)
Saga University, Japan (1998-2002)
Université Paris XI, France (since 1997, APVV SK-FR bilateral project Štefánik)
Norwegian Technical University, Trondheim, Norway (1994-1995)