“Extraction of Chitosan from Parapenaeus Longirostris Shells and Identification of Functional Groups Using FT-IR Spectroscopy”. Latakia University (formerly Tishreen) Journal for Research and Scientific Studies - Basic Sciences Series, vol. 48, no. 2, June 2026, pp. 145-57, https://journal.latakia-univ.edu.sy/index.php/bassc/article/view/21313.