1. A. D. Pomogailo and G. I. Dzhardimalieva, Monomeric and Polymeric Metal Carboxylates (Fizmatlit, Moscow, 2009) [in Russian].
2. Chemical Encyclopedia, Ed. by I. L. Knunyants (Sovetskaya entsiklopediya, Moscow, 1988), vol. 1, p. 623 [in Russian].
3. Chemical Encyclopedia, Ed. by I. L. Knunyants (Sovetskaya entsiklopediya, Moscow, 1992), vol. 3, p. 639 [in Russian].
4. SanPiN 2.32.1293-03: Sanitary-Epidemiological Rules and Standards “Hygienic Requirements for the Use of Food Additives,” Annex 1 (Moscow, June 15, 2003) as amended on May 26, 2008 [in Russian].
5. Chemical Encyclopedic Dictionary Ed. by I. L. Knunyants (Sovetskaya entsiklopediya, Moscow, 1983) [in Russian].