PENG, Donglin. On the Effectiveness of Real Estate Mortgage Contracts without Mortgage Registration Abstract. Modern Law Research, [S. l.], v. 2, n. 2, p. 33–39, 2026. Disponível em: https://www.masonpublish.org/index.php/the-modern-law-research/article/view/1842. Acesso em: 14 nov. 2026.