Betmakaev A., Yudina I. Walter Ulbricht, Physical Culture and Sport in the GDR (1949-1971) // Izvestiya of Altai State University, 2023, № 3(131). P. 54-60 DOI: 10.14258/izvasu(2023)3-08. URL: http://izvestiya.asu.ru/article/view/%282023%293-08.