Mikołajczyk, Janusz, Zbigniew Bielecki, Mirosław Nowakowski, Beata Rutecka, and Jacek Wojtas. “System for Calibration of EUV Detectors”. Photonics Letters of Poland 1, no. 2 (June 29, 2009): pp. 70–72. Accessed April 13, 2024. https://www.photonics.pl/PLP/index.php/letters/article/view/1-24.