Shorter Notices. The Pakistan Development Review, [S. l.], v. 41, n. 1, p. pp.102–105, 2002. DOI: 10.30541/v41i1pp.102-105. Disponível em: https://www.thepdr.pk/index.php/pdr/article/view/1831. Acesso em: 6 dec. 2025.