SEMINARS Abroad

1976 - Institute of Physics and Energy, Obninsk, Russia: Spontaneously fissioning shape isomers.
1983 - Institute of Nuclear Research, Kiev, Ukraine: 5He radioactivity within analytical superasymmetric fission model.
1984 - J. I. N. R. Dubna, Russia: New kind of radioactivity - spontaneous emission of heavy ions.
1985 - University of Frankfurt am Main, Germany: Heavy particle radioactivity.
1985 - University of Giessen, Germany: Nuclear decay by spontaneous emission of charged particles.
1985 - Institute of Nuclear Physics, Karlsruhe, Germany: New superasymmetric fission processes.
1985 - Institute of Heavy Ion Studies (G. S. I.), Darmstadt, Germany: Alpha decay, cold fission and cluster radioactivities.
1987 - Institute of Nuclear Physics, Orsay, France: Analytical superasymmetric fission model and the odd-even cluster emitters.
1987 - University of Tuebingen, Germany: Cluster emission from nuclei far off the beta-stability line.
1988 - University of Tokyo, Japan: Werner-Wheeler dynamics of cluster emission.
1989 - Polytechnical Institute (Technische Hochschule) Darmstadt, Germany: Experimentally confirmed heavy particle radioactivities.
1989 - University of Mainz, Inst. fuer Kernchemie, Germany: Cluster radioactivity.
1990 - University of Tuebingen, Germany: Cluster emission from nuclei far off the beta-stability line.
1990 - Boris Kidric Institute, Belgrad, Yugoslavia: Inertia and fission paths for cluster decay modes.
1990 - University of Milano, Italy: Experiments on spontaneous emission of heavy particles from nuclei.
1991 - University of Giessen, Germany: Cluster preformation probability in fission theory.
1992 - Institute of Nuclear Physics, Nuclear Structure, Orsay, France: Nuclear dynamics of cluster emission.
1993 - University of Giessen, Germany: Universal curves for alpha decay and heavy particle radioactivities.
1994 - Institute of Heavy Ion Studies (G. S. I.), Darmstadt, Germany: 12C radioactivity of 114Ba.
1995 - Institute of Nuclear Physics, Theoretical Physics, Orsay, France: Fine structure of 14C radioactivity.
1995 - University of Giessen, Germany: The island of cluster emitters above 100Sn.
1997 - Yale University, Wright Nuclear Structure Laboratory, New Haven, Connecticut, USA: Cluster radioactivity and superheavy nuclei.
1998 - Oak Ridge National Laboratory, Theoretical Departemnet, Oak Ridge, Tennessee, USA: Quasi-molecular states and multicluster fission.
1998 - Cyclotron Laboratory, A&M University, College Station, Texas, USA: Cluster radioactivities and ternary fission.
1999 - University of Giessen, Germany: Quasi-molecular states in ternary nuclear fission.
1999 - Theory Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA: Quasi-molecular states in ternary nuclear fission.
2001 - Advanced Science Research Center of the Japan Atomic Research  Institute, Tokai, Japan: Ternary fission and cluster decay.
2001 - Sendai Nuclear Science Colloquim, Tohoku University, Sendai, Japan: Ternary fission.
2002 - Yukawa Institute of Theoretical Physics, Kyoto University,  Kyoto, Japan: Nuclear quasimolecules in ternary fission.
2003 - Institute of Theoretical Physics, Justus Liebig University , Giessen, Germany: Saddle point shapes of nuclei. 
2004 - Max Planck Institute for Brain Research (Interdisciplinary FIAS Colloquium), Frankfurt am Main, Germany: Fission phenomena.
2005 - Centre d'Etudes Nucleaires Bordeaux-Gradignan, France:  Fission valleys and heavy ion decay modes.
2006 - Institute of Theoretical Physics, Justus Liebig University, Giessen, Germany:  A. Proca, and his equation of the massive vector boson field.
2007 - Theoretical MesoBioNano Science Group at Frankfurt Institute for Advanced Studies(FIAS): Macroscopic-microscopic approach to atomic cluster physics.
2008 -Institute of Theoretical Physics, Justus Liebig University, Giessen, Germany: Atomic clusters on surfaces.
2008 - Special Lecture, The MesoBioNano Science Group at Frankfurt Institute for Advanced Studies(FIAS): Shell correction method for the analysis of stability of deformed atomic clusters.
2009 - Theoretical MesoBioNano Science Group at Frankfurt Institute for Advanced Studies(FIAS): Charged metallic clusters.
2009 -Institute of Theoretical Physics, Justus Liebig University, Giessen, Germany: Metallic clusters as ideal trimer emitters.