* {{Cita libro|autore=Barbara Ryden|titolo=Introduction to Cosmology|anno=2006|cid=Ryden}}
* {{Cita libro|autore=Thanu Padmanabhan|nome=Thanu|titolo=Structure formation in the universe|url=https://books.google.com/books?id=AJlOVBRZJtIC|anno=1993|editore=Cambridge University Press|città=Cambridge|ISBN=978-0-521-42486-8|cid=Padmanabhan}}
* {{Cita pubblicazione|autore=Spergel|nome=D. N. Spergel|anno=2003|titolo=First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters|rivista=Astrophysical Journal Supplement|volume=148|numero=1|pp=175–194|doi=10.1086/377226|bibcode=2003ApJS..148..175S|url=http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:astro-ph/0302209|arxiv=astro-ph/0302209}}
