He is known only by a single work, Cosmographia, which is a set of notes he had written down by one of his students while he lectured about a world map (sphaera), and by references to this work by later writers such as Cassiodorus.
A number of variant manuscripts exist, which have been studied by Nicolet & Gautier Dalché.
The only (relatively) modern print version was as one of a collection of fragmentary texts published by Riese.
The most recent study, by Modéran, suggests a late 4th century date.
[3] An attempt to reconstruct the sphaera was made by Kubitschek[4] and by Konrad Miller.