He is the son of Jerzy Różycki, one of the three Polish mathematicians who worked on Enigma decryption from December 1932 through at least the Phoney War (1940).
Their son, Janusz Różycki, born May 10, 1939, would complete his studies at Warsaw's Academy of Fine Arts and go on to be a member of the Polish fencing team that won a silver medal at the 1964 Tokyo Olympics.
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Władysław Kozaczuk, Enigma: How the German Machine Cipher Was Broken, and How It Was Read by the Allies in World War II, edited and translated by Christopher Kasparek, Frederick, MD, University Publications of America, 1984.
Jerzy Grotowski | Stanisław Jerzy Lec | Jerzy Skolimowski | Jerzy Buzek | Adam Jerzy Czartoryski | Jerzy Wasowski | Jerzy Stuhr | Jerzy Neyman | Jerzy Kosiński | Jerzy Bończak | Jerzy Żuławski | Jerzy Maksymiuk | Ludomir Różycki | Jerzy Różycki | Jerzy Kukuczka | Jerzy Kosinski | Jerzy Kłoczowski | Jerzy Kawalerowicz | Jerzy Hoffman | Janusz Różycki | Stefan Jerzy Zweig | Michał Jerzy Poniatowski | Jerzy Ziętek | Jerzy Zaruba | Jerzy Waldorff | Jerzy Treder | Jerzy Strzelczyk | Jerzy Sterczyński | Jerzy Rzedowski | Jerzy Robert Nowak |