author = { Hämeen-Anttila, K. A. AND Jaakkola, Toivo },

title = { The mean spectrum and absolute magnitude of quasi-stellar objects },

publisher = {Suomalainen Tiedeakatemia},

year = {1967},

abstract = {Literaturverz. S. [12]},

booktitle = {Annales Academiae Scientiarum Fennicae ; Series A. 6, Physica ; 246},

address = { Helsinki },

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