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Invited
Talks
Seminars:
- Moscow University, Russia, USSR (1971,
1978, 1982);
- Steklov Institute, Moscow, Russia, USSR
(1975, 1978 , 1980, 1984);
- Joint Institute for Nuclear Research,
Dubna, Russia, USSR (1976, 1977,
- 1980, 1984, 1986, 1990);
- Rostok University, DDR (1977);
- Prague University, Czechoslovakia (1979)
- Kharkov University, Ukraine, USSR (1983);
- Institute of Condensed Matter Physics,
Lviv, Ukraine (1983, 1996, 1998);
- Dublin Institute for Advanced Studies,
Ireland (1990, 2016, 2017);
- Viena University, Austria (1993);
- Rome University \La Sapienza", Italy (1993);
- Wroclaw University, Poland (1993, 1994);
- Bielefeld University, BiBoS, Germany (1993,
1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004);
- Fachbereich Physik der Univ.
Munchen,Germany (1996);
- CPT-C.N.R.S.-Luming, Marseille, France
(1994, 1996, 2002, 2008).
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