author = { Hess, Hans-Eberhard AND Langer, Freddy },

title = { Blind Date Portfolio Freddy Langer },

publisher = {},

isbn = {1863-1509},

keywords = { Langer, Freddy },

year = {2017},

address = { },

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