Tefelska, Marzena M., Tomasz R. Woliński, Roman Dąbrowski, and Jan Wójcik. “Chiral Nematic Liquid Crystals As an Alternative Filling in Photonic Crystal Fibers”. Photonics Letters of Poland 2, no. 1 (March 30, 2010): pp. 28–30. Accessed April 19, 2024. https://www.photonics.pl/PLP/index.php/letters/article/view/2-10.