Igor Rotenberg Igor Rotenberg Igor Rotenberg, () is a Russian billionaire businessman and the oldest son and heir to Arkady Rotenberg, Russian billionaire businessman and co-owner with brother Boris Rotenberg, of the SGM (Stroygazmontazh) group. The Rotenberg's are closely associated with Vladimir Putin. In October 2018, Igor Rotenberg's wealth is estimated to be $1.1 billion. Igor Rotenberg has been under United States sanctions since 6 April 2018. Igor is the majority shareholder in Gazprom Drilling. Igor Rotenberg was born on 9 September 1974 in Leningrad to Arkady Rotenberg. In 2002, he graduated from the Higher School of Privatization and Entrepreneurship () in
Arkady Aronov the Weizmann Institute of Science. In the 1990s, he visited University of Karlsruhe for extended periods of time, and he also became an Associate Member of the scientific staff of the International Centre for Theoretical Physics, Trieste. Arkady Aronov died in November 1994 in Rehovot as a result of a heart attack. During his career, Arkady Aronov supervised a number of PhD theses including these of Evgeny Ivchenko, Boris Spivak, Boris Altshuler, Alexey Ioselevich, Aleksander Zyuzin, and Alexander Mirlin. The fields in which Arkady Aronov contributed the most are In 1975, together with late Gennady Bir and with Grigory Pikus,