For citations:
Mamedov E.I., Koltsov V.A., Kalmykova E.N. Synthesis and study of composite materials based on apple pectin and copper cations. Proceedings of the Voronezh State University of Engineering Technologies. 2023;85(2):247-255. (In Russ.) https://doi.org/10.20914/2310-1202-2023-2-247-255