Michalik, Łukasz, and Andrzej Domański. “Effective State of Polarization of Photon-Beam”. Photonics Letters of Poland 3, no. 1 (March 31, 2011): pp. 41–43. Accessed April 27, 2024. https://photonics.pl/PLP/index.php/letters/article/view/3-15.