@phdthesis{ 0-1159611556, title = {Ravennastudien: ideengeschichtliche und ikonographische Untersuchungen über die Mosaiken von Ravenna}, author = {Nordstroem, Carl-Otto}, address = {Stockholm}, publisher = {Almqvist & Wiksell}, year = {1953}, school = {Zugl.: Uppsala, Univ., Diss., 1953}, language = {German}, url = {https://katalog.gfzk.de/Record/0-1159611556} }