TY - BOOK T1 - Distributed Learning Ecosystems. Concepts, Resources, and Repositories Y1 - 2023 A1 - Otto, Daniel A1 - Scharnberg, Gianna A1 - Michael Kerres A1 - Zawacki-Richter, Olaf KW - evaluation KW - OER KW - open education PB - Springer Nature CY - Berlin ER -