@book{ 0-1175942545, title = {Werke 1920 - 1924 und das Problem des "Shaped Canvas": 5. bis 31. Mai, Kölnischer Kunstverein}, author = {Peri, Laszlo and Herzogenrath, Wulf}, editor = {Peri, Laszlo}, editor = {Herzogenrath, Wulf}, address = {Köln}, publisher = {}, year = {1973}, language = {German}, note = {Ausstellungskatalog}, url = {https://katalog.skd.museum/Record/0-1175942545} }