Sáez-Gastón, Roberto, Dairon Iglesias-Guevara, Alicia Casariego-Año, Carlos A. Peniche-Covas, and Yaimara Solís-Moré. “Development of PH Indicator Films Based on Chitosan and Beeswax”. Revista Cubana de Química 36, no. 1 (July 8, 2024): 1–14. Accessed November 21, 2024. https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5356.