Wittig, Claudia. “Fragments of Didacticism : The Early Middle High German ‘Rittersitte’ and ‘Der Heimliche Bote.’” Prodesse et Delectare : Case Studies on Didactic Literature in the European Middle Ages = Fallstudien Zur Didaktischen Literatur Im Europäischen Mittalalter, edited by Norbert Kössinger and Claudia Wittig, vol. 11, De Gruyter, 2019, pp. 177–209, doi:10.1515/9783110650068-008.