author = { Kepler, Johannes Hammer, Franz AND Hammer, Esther AND Hammer, Esther AND Seck, Friedrich },

title = { Selbstzeugnisse },

publisher = {Frommann},

isbn = {3772803199},

keywords = { Kepler, Johannes , Quelle },

year = {1971},

address = { Stuttgart },

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