Lang, K.R. (September 2006) „5.1 MAGNETIC FIELDS IN THE VISIBLE PHOTOSPHERE“, Sun, earth, and sky, 2nd, Springer, გვ. 81. ISBN978-0-387-30456-4. „this opaque layer is the photosphere, the level of the Sun from which we get our light and heat“
The Sun's Corona – Introduction. NASA. ციტატა: „Now most scientists believe that the heating of the corona is linked to the interaction of the magnetic field lines.“ ციტირების თარიღი: 2010-05-21.
sciencedaily.com
"Beyond the Blue Horizon" – A Total Solar Eclipse Chase (1999-08-05). ციტატა: „On ordinary days, the corona is hidden by the blue sky, since it is about a million times fainter than the layer of the sun we see shining every day, the photosphere.“ ციტირების თარიღი: 2010-05-21.