Lembicz, F., and M. El Fray. “Investigations of the Ultrasounds Velocity and Its Relation to the Heterophase Structure of Multiblock Elastomers Consisting of poly(butylene Terephthalate) and poly(1,2-Oxypropylene) or Dimerized Fatty Acid”. Polimery 47, no. 9 (September 18, 2022): 630-636. Accessed May 9, 2024. http://ichp.vot.pl/index.php/p/article/view/2010.