author = { Schmitt, Otto AND Friedrich, Caspar David },

title = { Die Ruine Eldena im Werk von Caspar David Friedrich },

publisher = {Mann},

year = {[ca. 1943]},

booktitle = {Der Kunstbrief ; 25},

address = { Berlin },

url = { http://slubdd.de/katalog?TN_libero_mab2 }