Grovermann, Christian; Van Hoi, Phan; Thi Bich Yen, Nguyen; Schreinemachers, Pepijn; Ngo Hai, Minh and Ferrand, Pierre (2024) Impact of participatory guarantee systems on sustainability outcomes: the case of vegetable farming in Vietnam. International Journal of Agricultural Sustainability , 22 (1) , pp. 1-15 .