T. FRAS, M. NISHIDA, A. RUSINEK, R. B. PĘCHERSKI, and N. FUKUDA, “Description of the Yield State of Bioplastics on Examples of Starch-Based Plastics and PLA/PBAT Blends”, Eng. Trans., vol. 62, no. 4, pp. 329–354, Dec. 2014, doi: 10.24423/engtrans.238.2014.