Salama, H. E., M. S. A. Aziz, and G. R. Saad,  "Thermal properties, crystallization and antimicrobial activity of chitosan biguanidine grafted poly(3-hydroxybutyrate) containing silver nanoparticles",  International Journal of Biological Macromolecules, vol. 111, pp. 19 - 27, 2018.