I had started with EPR spectroscopy, where the methods are radio-physical, the theory of spectra required quantum chemical approach. After a short period spent with theoretical chemical kinetics, I started to work in quantum chemical methodology. In 1970-es I was mainly involved in the development of Lowdin's spin projected extended Hartree-Fock method, since that mainly in the interrelation between physical and  chemical descriptions of molecules. (But I worked with a number of other  topics, too -- e.g. antiferromagnets, intermolecular interactions, etc,)
Education
Master in radiophysics, Kharkov State University, 1967
PhD and DSc in chemistry, Hungarian Academy of Sciences
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