HU, Mengwei. Presentations of Diagram Categories. The PUMP Journal of Undergraduate Research, [S. l.], v. 3, p. 1–25, 2019. DOI: 10.46787/pump.v3i0.2256. Disponível em: https://journals.calstate.edu/pump/article/view/2256. Acesso em: 2 jul. 2024.