OPERAs work on Ecolabel Review and ES Indicators were presented by Diana Tuomasjukka (EFI) and Yitagesu Tekle Tegegne (EFI) at the World Forestry Congress (WFC) in Durban, 7-11 Sept 2015: http://webapps.daff.gov.za/wfc2015/English/HOME.html.