Kwaśny, Michał, Urszula A. Laudyn, Paweł Jung, and Mirosław A. Karpierz. “Possibility of Discrete Beam Propagation in Chiral Nematic Liquid Crystals”. Photonics Letters of Poland 1, no. 4 (December 31, 2009): pp. 160–162. Accessed May 17, 2024. http://www.photonics.pl/PLP/index.php/letters/article/view/1-54.