Vovk, Roman G., and Alexei D. Kiselev. “Polarization-Resolved Conoscopic Patterns of Planar Oriented Liquid Crystal Cells”. Photonics Letters of Poland 3, no. 1 (March 31, 2011): pp. 14–16. Accessed June 18, 2024. https://www.photonics.pl/PLP/index.php/letters/article/view/3-6.