吳汝. 老子哲學的無的概念之探究: A Study of the Concept of Nothing in Lao-tzu’s Philosophy. 人文中國學報, [S. l.], v. 3, p. 119–149, 1996. DOI: 10.24112/sinohumanitas.32316. Disponível em: https://ejournals.lib.hkbu.edu.hk/index.php/sinohumanitas/article/view/2316. Acesso em: 27 may. 2026.