Classen, Albrecht. “The Problematic Nature of Periodization and the Alleged Paradigm Shifts: Courtly Love Poetry (Minnesang), Petrarch’s Sonnets, Goethe’s Erotic Compositions, and Brecht’s Dreams of Love”. Global Journal of Cultural Studies 2 (March 14, 2023): 1–15. Accessed October 5, 2024. https://lifescienceglobalca.com/index.php/GJCS/article/view/9055.