1. Yu. A. Zolotov, Extraction of Chelate Compounds [in Russian], Nauka, Moscow (1968).
2. N. A. Kostromina, V. N. Kumok, and N. A. Skorik, Coordination Chemistry [in Russian], Vysshaya Shkola, Moscow (1990).
3. G. A. Razuvaev, B. G. Gribov, G. A. Domrachev, and B. A. Salamatin, Metal Compounds in Electronics [in Russian], Nauka, Moscow (1972).
4. J. Stary, The Solvent Extraction of Metal Chelates, Pergamon, Oxford (1964).
5. A. V. Nikolaev, L. N. Mazalov, É. A. Galtsova, et al., Dokl. Akad. Nauk SSSR, 5, 1113 (1970).