“Synthesis and Characterization of Poly (Glycerol-Succinic Acid) PGSA Grafted With Poly (L-Lactic Acid) PLLA and Determination of the Degree of Branching (DB) by NMR-COSY Technique”. Damascus University Journal for the Basic Sciences, vol. 39, no. 4, Dec. 2023, https://journal.damascusuniversity.edu.sy/index.php/basj/article/view/5139.