L. A. Kazitsyna, B. S. Kikot', L. D. Ashkinadze, O. A. Reutov, “The frequencies and intensities of the infrared absorption bands $\nu$
of diazonium salts-$\mathrm{X}$ – $\mathrm{C}_6\mathrm{H}_4 \mathrm{N}_2\mathrm{Cl}$,
as correlated with the constants of the substituent”, Dokl. Akad. Nauk SSSR, 151:3 (1963), 573–576
