“Preparation and Study of Some Properties, True Density, Apparent Porosity and Water Absorption of Polymeric Blend Films [PVA:PVP] Reinforced by CaCl2.2H2O Salt”., Euro.J.Ph.Ch.Ma., vol. 7, pp. 51–56, Jun. 2022, Accessed: Jan. 20, 2026. [Online]. Available: https://geniusjournals.org/index.php/ejpcm/article/view/1657