Begmanova, G. E., R. K. Dauletbayeva, and Z. S. Atazhanova. “Analysis of Modern Methods of Gas Cleaning From Hydrogen Sulfide”. American Journal of Social and Humanitarian Research 3, no. 5 (May 28, 2022): 208–212. Accessed July 2, 2025. https://globalresearchnetwork.us/index.php/ajshr/article/view/1098.