Barriers and facilitators of purchasing from short food supply chains: evidence from consumer focus groups in Germany, Spain, Greece and Hungary oleh Betty P.I. Chang, Camila Massri, Malou Reipurth, Eugenia Petropoulou, Verena Hüttl-Maack, Dennis Gawlik, Katalin Kujáni, Viktória Szente, Adrienn Hegyi, Ágnes Szegedyné Fricz, Elena Santa Cruz, Theo Benos, Camille Aouinaït, Débora Campos, Begoña Alfaro, Frank Jansseni, Irini Theodorakopoulou, Constantine Iliopoulos, Sophie Hieke