Mangasaryan, S.H. et al. 2007. EXTRACTION-ABSORPTIOMETRIC DETERMINATION OF COPPER BY BRILLIANT GREEN IN SULPHURIC ACID SOLUTIONS IN NATURAL AND WASTE WATERS. Proceedings of the YSU B: Chemical and Biological Sciences. 41, 3 (214) (Oct. 2007), 103–106. DOI:https://doi.org/10.46991/PYSU:B/2007.41.3.103.