Vyroubal, P., J. Maxa, V. Neděla, J. Jirák, and K. Hladká. “Apertures With Laval Nozzle and Circular Orifice in Secondary Electron Detector for Environmental Scanning Electron Microscope”. Advances in Military Technology 8, no. 1 (February 18, 2022): 59–69. Accessed April 19, 2024. https://aimt.cz/index.php/aimt/article/view/1573.