Geokchyan, N.O. et al. 2005. EXTRACTION-ABSORPTIOMETRIC DETERMINATION OF LEVOMICYTINE BY PIRONINE «B». Proceedings of the YSU B: Chemical and Biological Sciences. 39, 3 (208) (Oct. 2005), 90–93. DOI:https://doi.org/10.46991/PYSU:B/2005.39.3.090.