1. Kitaev, Yu.P. and Buzykin, B.N., Gidrazony (Hydrazones), Moscow: Nauka, 1974.
2. Kogan, V.A, Zelentsov, V.V., Larin, G.M., and Lukov, V.V., Kompleksy perekhodnykh metallov s gidrazonami. Fiziko-khimicheskie svoistva i stroenie (Transition Metal Complexes with Hydrazones. Physical and Chemical Properties and Structure), Moscow: Nauka, 1990.
3. Parpiev, N.A., Yusupov, V.G., Yakimovich, S.I., and Sharipov, Kh.G., Atsilgidrazony i ikh kompleksy s perekhodnymi metallami (Acylhydrazones and Their Complexes with Transition Metals), Tashkent: Fan, 1988.
4. Stadler, A.-M. and Harrowfild, J., Inorg. Chim. Acta., 2009, vol. 362, no. 12, p. 4298.
5. Popov, L.D., Morozov, A.N., Shcherbakov, I.N., Tupolova, Yu.P., Lukov, V.V., and Kogan, V.A., Russ. Chem. Rev., 2009, vol. 78, no. 7, p. 643.