Some heterocyclic azo compounds as analytical reagents XXIII. Study of 2-(2-hydroxy-5-methylphenylazo)-7-oxo -5,5-dimethyl-4,5,6,7-tetradydrobenzothiazole and its complexes with Cu(II), Zn(II), Fe(II), Co(II), and Ni(II)
by: Kuchár, Emil, 1926-1981, et al.