Hayrapetyan, S. S., et al. “THE INFLUENCE OF CARBONIZATION ACTIVATORS ON THE SORPTION PROPERTIES OF ACTIVATED CHARCOAL OBTAINED FROM THE CIRCASSIAN WALNUT SHELL”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 43, no. 2 (219), May 2009, pp. 22-26, doi:10.46991/PYSU:B/2009.43.2.022.