Codex Justinianus 6, 21, 1. Florus's case.

von Zwalve, Willem
Veröffentlicht in Crises and the Roman empire : proceedings of the Seventh Workshop of the International Network Impact of Empire, Nijmegen, June 20-24, 2006.
Leiden ; Boston : Brill, 2007.
Umfang/Format: 367-378.

Codex Justinianus 6 : 21.1 : Florus's case.

von Zwalve, Willem
Veröffentlicht in Crises and the Roman Empire. Proceedings of the 7th workshop of the International Network Impact of Empire (Nijmegen, June 20-24,2006).
Leiden : Brill, 2007.
Umfang/Format: 367-378.

Valerius Patruinus' case : Contracting in the name of the emperor.

von Zwalve, Willem
Veröffentlicht in The representation and perception of Roman imperial power. Proceedings of the third workshop of the international network Impact of Empire (Roman Empire, c. 200 B.C. - A.D. 476). Netherlands Institute in Rome, march 20-23, 2002.
Amsterdam : Gieben, 2003.
Umfang/Format: 157-169.

Callistus' case : some legal aspects of Roman business activities.

von Zwalve, Willem J.
Veröffentlicht in The transformation of economic life under the Roman empire. Proceedings of the Second Workshop of the International Network "Impact of empire. Roman empire, c. 200 B.C. - A.D. 476". Nottingham, July 4 - 7, 2001
Umfang/Format: 116-127.