Soviet physicist who received the 1958 Nobel Prize in Physics, jointly with Pavel Alekseyevich Cherenkov and Ilya Frank, for their 1934 discovery of Cherenkov radiation.
1.) Vitaliĭ Lazarevich Ginzburg (2005). About Science, Myself and Others. CRC Press. p. 253. ISBN 9780750309929. "Nowadays, when we are facing manifestations of religious and. more often, pseudoreligious feelings, it is appropriate to mention that Igor Evgenevich was a convinced and unreserved atheist."
2.)Physicists: Epoch and Personalities (2 ed.). World Scientific. 2011. p. 86. ISBN 9789812834164.