Proekt said the properties are located near Putin's Moscow mansion. The Russian president has long sought to keep secret the vast wealth he and his family own. Russian President Vladimir Putin and his ex-wife Lyudmila enter a Moscow polling station, 02 December 2007, to cast their votes in Russia's parliamentary elections. Katerina Tikhonova, deputy director of the Institute for Mathematical Research of Complex Systems at Moscow State University and daughter of Russian President Vladimir Putin. Russian President Vladimir Putin (left) and his rumored girlfriend and retired rhythmic gymnast Alina Kabaeva (right).

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Persons: Proekt, —, Vladimir Putin, Putin's, Kiril Shamanov, Putin, Lyudmila Shkrebneva, Maria Vorontsova, Katerina Tikhonova, Tikhonova, Shamalov, Lyudmila, DMITRY ASTAKHOV, Vorontsova's, Alina Kabaeva, Sasha Mordovets, Juliana Kaplan Organizations: Service, Russian, Getty, Institute for Mathematical Research, Systems, Moscow State University, REUTERS, Shkrebneva, Tikhonova, Putin Locations: Russian, Putin's Moscow, Ogaryovo, Moscow, AFP, Biarritz, France, Sibur, Ukraine