ShevchukT.M., BordyukM.A., KrivtsovV.V., KuklaV.V., and MashchenkoV.A. “Viscoelastic Properties of Filled Polyurethane Auxetics”. Physics and Chemistry of Solid State 22, no. 2 (June 16, 2021): 328-335. Accessed November 27, 2021. http://mif.pu.if.ua/index.php/pcss/article/view/4796.