EINZIG, P. The support point mechanism. PSL Quarterly Review, [S. l.], v. 18, n. 74, 2017. DOI: 10.13133/2037-3643/14065. Disponível em: https://rosa.uniroma1.it/rosa04/psl_quarterly_review/article/view/14065. Acesso em: 23 jul. 2024.