“Spectrophotometric Determination of Zineb With Disulfophenylfluorone and Polyhexamethyleneguanidine Chloride”. V. N. Karazin Kharkiv National University Bulletin. Chemical Series, no. 21, Dec. 2012, pp. 243-50, https://doi.org/10.26565/2220-637X-2012-21-26.