“INFLUENCE OF LASER EXCITATION ON Еg OF POROUS SILICON, GOT IN ELECTROLYTE OF HF ETHOXYETANOL”. Journal of open systems evolution problems 13, no. 1 (June 1, 2021): 16–21. Accessed July 14, 2026. https://peos.kaznu.kz/index.php/peos/article/view/198.