Collect. Czech. Chem. Commun.
1975, 40, 1694-1710
https://doi.org/10.1135/cccc19751694
Spectrophotometric study of the complexation equilibria and determination of copper(II) with 1-(2-thiazolylazo)-2-naphthol-3,6-disulphonic acid
M. Langová, V. Kubáň and D. Nonova