“ANALYTICAL CHEMISTRY ZOL-GEL IS PRODUCED ON THE BASIS OF PROCESSES AMMONIA USES NANOMATERIALS CREATION OF SELECTIVE GAS SENSORS”, Eur. j. emerg. technol. discov., vol. 1, no. 9, pp. 24–31, Dec. 2023, Accessed: Sep. 12, 2025. [Online]. Available: https://europeanscience.org/index.php/1/article/view/341