Professor Sitenko has contributed to
            both plasma physics and nuclear theory. His pioneer papers in kinetic
            plasma theory and theoretical nuclear physics are known all over the
            world. His results concerning the dielectric permittivity tensor for
            a plasma with external magnetic field, combination scattering of waves
            by plasma fluctuations, theory of electromagnetic fluctuations in
            plasmas belong to the fundamental basis of physics that is often being
            mentioned in literature without reference to the author, as a matter
            of common knowledge. His diffraction approach to the theory of nuclear
            processes is known as Sitenko-Glauber method. His extension of the
            fluctuation-dissipation theorem to nonequilibrium systems, renormalized
            theory of nonequilibrium and turbulent plasmas, latest research in
            the kinetic theory of dusty plasmas are of major importance both for
            theoretical and applied physics.
          
Professor Sitenko was the founder and
            organiser of international conferences on plasma physics. After the
            two meetings in Kiev (1971 and 1974), they were held in other countries,
            under the name of Kiev Conferences on Plasma Theory, and later joined
            with the International Congresses on Waves and Instabilities in Plasmas.
            Now these Conferences are being held within the framework of the International
            Conferences on Plasma Physics (ICPP). ....
          
He was active until the last day -- continued
            his research work, headed the Bogolyubov Institute for Theoretical
            Physics of the Ukrainian Academy of Sciences, gave lecture courses
            in Kiev University, supervised students and postgraduates, took part
            in scientific discussions.
          
God bless his soul.
          
The memorial service was held on Thursday
            February 14, 2002, for information please contact the Bogolyubov Institute
            for Theoretical Physics. Condolences can be sent to the Institute.
            
          
            Mail
          address: Metrolohichna Str. 14b, 03143 Kiev, Ukraine 
          e-mail: itp@bitp.kiev.ua 
            tel: (380 44) 266 91 23 
            fax (380 44) 266 59 98 
          
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          contact: plasma@artech.or.jp