Cartan used his influence to help obtain the release of some dissident mathematicians, including Leonid Plyushch and Jose Luis Massera.
Leonid Brezhnev | Leonid Kuchma | Leonid Kravchuk | Leonid Gaidai | Leonid Serebrennikov | Leonid Kuravlyov | Leonid Krasin | Leonid Dushkin | Leonid Andreyev | Leonid Sobinov | Leonid Popov | Leonid Plyushch | Leonid Pasternak | Leonid Korchmar | Leonid Yatsenko | Leonid Yakubovich | Leonid Vysheslavsky | Leonid Volodarskiy | Leonid Vaseršteĭn | Leonid Utyosov | Leonid Tălmaci | Leonid Sokov | Leonid Skirko | Leonid Reiman | Leonid Pastur | Leonid Parfyonov | Leonid Minin | Leonid Mikhailovich Shkadov | Leonid Markelov | Leonid Mandelstam |
Notable political prisoners of psikhuskas include poet Joseph Brodsky, dissidents Leonid Plyushch, Vladimir Bukovsky, Natalya Gorbanevskaya, Alexander Esenin-Volpin, Pyotr Grigorenko, Zhores Medvedev, Viktor Nekipelov, Valeriya Novodvorskaya, Natan Sharansky, Andrei Sinyavsky and Anatoly Koryagin, politician Konstantin Päts, and whistle blower Larisa Arap .