Hartmut Ring b. 1946 Source: Wikimedia Commons About Hartmut Ring German mathematician People from the Same Era Franz-Joseph Peine 1946–2021 jurist, university teacher Detmold Soslan Andiyev 1952–2018 amateur wrestler Vladikavkaz Leonid Shkolnick b. 1945 engineer, metallurgist Dnipro Nikolai Nikolov-Zikov b. 1946 painter Sofia Philip Rantzer b. 1956 painter, printmaker, sculptor, university teacher, visual artist Ploiești Costică Ștefănescu 1951–2013 association football coach, association football player Bucharest