Matty, F. S., M. T. Sultan, and A. K. Amine. “Swelling Behavior of Cross-Link PVA With Glutaraldehyde”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 28, no. 2, Mar. 2017, pp. 136-4, https://jih.uobaghdad.edu.iq/index.php/j/article/view/218.