author = { Abell, George O. Morrison, David AND Wolff, Sidney C. },

title = { Realm of the universe },

edition = { 4. ed } ,

publisher = {Saunders College Publishing},

isbn = {0030051398},

keywords = { Universe , Cosmology },

year = {1988},

booktitle = {Saunders golden sunburst series},

address = { Philadelphia [u.a.] },

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