De appellationibus libri
Ex libro III
Dig. 50,9,3Ulpianus libro tertio de appellationibus. Lege autem municipali cavetur, ut ordo non aliter habeatur quam duabus partibus adhibitis.
Ulpianus, On Appeals, Book III. It is provided by municipal law that the Order of Decurions shall not be considered to have assembled, unless two-thirds of the members are present.