Ali, Najla. “The Elasticity and Viscosity of Polyvinyl Alcohol / Sodium Bicarbonate (PVA/ NaHCO3) and Polyvinyl Alcohol /Sodium Chloride (PVA/ NaCl) Samples”. International Journal of Engineering and Applied Physics 2, no. 1 (January 24, 2022): 346–354. Accessed November 24, 2024. https://ijeap.org/ijeap/article/view/58.