Ali, N. “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, vol. 2, no. 1, Jan. 2022, pp. 346-54, https://ijeap.org/ijeap/article/view/58.