Kościelska, Barbara, Marcin Łapiński, Wojciech Sadowski, and Marzena Dęby. “Structure of Sol-Gel Derived Nb2O5 Films for Active Coating Devices”. Photonics Letters of Poland 3, no. 2 (June 29, 2011): pp. 61–63. Accessed November 21, 2024. http://photonics.pl/PLP/index.php/letters/article/view/3-22.