HOSAIN, Nazmul; ANISUZZAMAN, Md. Remembering Christiaan Barnard in Philately. Cardiovascular Journal, [S. l.], v. 16, n. 1, p. 53–55, 2023. DOI: 10.3329/cardio.v16i1.68318. Disponível em: https://www.banglajol.info/index.php/CARDIO/article/view/68318. Acesso em: 6 oct. 2025.