Avakaw, S., V. Jarsky, S. Karpovich, and A. Tsitko. 2008. “Optical-Mechanical Equipment for the Defect-Free Production of Reticles”. Elektronika Ir Elektrotechnika 84 (4):94-96. https://eejournal.ktu.lt/index.php/elt/article/view/11142.