The influence of pectin based metal-complexes on degradation of polyethylene - T. V. Dmytriieva; S. M. Kobylinskyi; V. V. Boiko; S. V. Riabov; V. I. Bortnytskyi; S. K. Krymovska; H. F. Nevmerzhytska; O. M. Komliakova (Polymer journal, 2015)