LUBCZAK, J. Polyurethane foams with purine rings. Polimery, [S. l.], v. 52, n. 7-8, p. 595–600, 2022. Disponível em: https://polimery.ichp.vot.pl/index.php/p/article/view/1455. Acesso em: 16 apr. 2025.