FAISAL, MUHAMMAD, TAKASHI SAEKI, HIDETO TSUJI, HIROYUKI DAIMON, and KOICHI FUJIE. 2010. “Depolymerization of Poly (L-Lactic Acid) under Hydrothermal Conditions”. Asian Journal of Chemistry 19 (3):1714-22. https://asianpubs.org/index.php/ajchem/article/view/13731.