Bibliografia

• Quasars and active galactic nuclei'' Kembhavi, Ajit K.
• An introduction to modern astrophysics'' Bradley W. Carroll, Dale A. Ostlie.
• http://www.inaoep.mx/~itziar/clases/AGN03.html
• http://cassfos02.ucsd.edu/public/tutorial/Quasars.html
• http://imagine.gsfc.nasa.gov/docs/science/know_l1/active_galaxies.html
• http://cassfos02.ucsd.edu/public/tutorial/GLens.html
• http://zebu.uoregon.edu/1996/ph123/qso.html
• http://csep10.phys.utk.edu/astr162/lect/active/quasars