Determining efficiency of cycloid reducers using different calculation methods Milos Matejic, Mirko Blagojevic, Ileana Ioana Cofaru, Nenad Kostic, Nenad Petrovic and Nenad Marjanovic MATEC Web Conf., 290 (2019) 01008 Published online: 21 August 2019 DOI: 10.1051/matecconf/201929001008