@phdthesis{ 0-021692815, title = {Poesie der Idee: die tragische Dichtung Friedrich Hebbels}, author = {Kraft, Herbert}, address = {Tübingen}, publisher = {Niemeyer}, year = {1971}, school = {Zugl.: Tübingen, Habil.-Schr.}, isbn = {348410144X}, language = {German}, url = {http://www.gbv.de/dms/hbz/toc/ht000671426.pdf}, url = {https://katalog.ub.uni-leipzig.de/Record/0-021692815} }