Application of quantum mechanics to chemistry and molecular
spectroscopy

1963~1965 Reseach Fellow. University of frankfurt/M
1965~1966 Postdoctoral Reseach Fellow. Princeton
University. U.S.A.
1966~1969 Postdoctoral Reseach Fellow and Lecturer.
University of California. Berkeley. U.S.A.
1969~1971 Lecturer. University of Zurich. Swizerland
1971~1975 Lecturer. Institute of Physical Chemistry.
Swiss Federal Institute of Technology (ETH). Switzerland
1975 Habilitation. Private Lecturer
1975~ Private Lecturer and Professor