“INVESTIGATION OF INTERACTION OF PHENYLTHIOUREA WITH MANGANESE (VII) AND CROMIUM (VI) AND DETERMINATION OF CROMIUM IN CROMIUM-CONTAINING ORE BY MEANS OF POTENTIOMETRIC TITRATION METHOD” (2010) Proceedings of the YSU B: Chemical and Biological Sciences, 44(1 (221), pp. 23–28. doi:10.46991/PYSUB.2010.44.1.023.