LEMBICZ, F.; EL FRAY, M. 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, [S. l.], v. 47, n. 9, p. 630-636, 2022. Disponível em: http://ichp.vot.pl/index.php/p/article/view/2010. Acesso em: 9 may. 2024.