GIPSTEIN, R. S. The Isolation and Purification Exception to the General Unpatentability of Products of Nature. Science and Technology Law Review, [S. l.], v. 4, 2002. DOI: 10.7916/stlr.v4i0.3626. Disponível em: https://journals.library.columbia.edu/index.php/stlr/article/view/3626. Acesso em: 25 apr. 2024.