Ertman, Sławomir, Tomasz R. Woliński, Ryszard Buczyński, Dariusz Pysz, Edward Nowinowski-Kruszelnicki, Roman Dąbrowski, and Jan Wójcik. “Photonic Liquid Crystal Fibers With Low-, Medium-, and High Refractive Indices of the Core”. Photonics Letters of Poland 2, no. 3 (October 1, 2010): pp. 113–115. Accessed November 23, 2024. http://photonics.pl/PLP/index.php/letters/article/view/2-39.