KOCK, A.; REYES, G. E. Models for synthetic integration theory. Mathematica Scandinavica, Berkeley, CA, United States, v. 48, p. 145–152, 1981. DOI: 10.7146/math.scand.a-11907. Disponível em: https://journals.msp.org/mscand/article/view/1722. Acesso em: 25 jul. 2026.