Gyulnazaryan, S.A. 2003. AMPEROMETRIC TITRATION OF PERRHENATE-IONS BY METHYL VIOLET AND CRYSTAL VIOLET ORGANIC BASIC DYES. Proceedings of the YSU B: Chemical and Biological Sciences. 38, 1 (203) (Dec. 2003), 71–75. DOI:https://doi.org/10.46991/PYSU:B/2004.38.1.071.