Франчук, Г.М., Є.О. Бовсуновський, and О.В. Рябчевський. “Assessment of Efficience of Purification of Chromic Waster Water With Application of Spondyle Green Clay”. Proceedings of National Aviation University (archive) 43, no. 2 (February 1, 2010): 110–113. Accessed February 22, 2026. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1864.