Tudorachi, N., and A. P. Chiriac. 2011. “Biodegradable Copolymers With Succinimide and Lactic Acid Units. Part II. Kinetics of Thermodegradation, Thermal Characteristics and Zeta Potential of the Product”. Polimery 56 (4):302-8. https://polimery.ichp.vot.pl/index.php/p/article/view/920.