Milestones of SCI projects in the East-West context1946Sítina, Olesovice, Steknice (CSR)1947Lucimia / AFSC (Poland)1947Omladinska pruga Samac-Sarajevo (Yugoslavia)1955Warzawa (Poland)1958Kupino (USSR)1966Halle-West (GDR)1966Tata (Hungary)