Reference edition:

C. Jeudi, La tradition manuscrite du "De aspiratione" attribué au grammairien Phocas, in Hommages à André Boutémy, Bruxelles 1976, pp. 197-215 (edizione alle pp. 212-215).

Although he included it in the section of the Grammatici Latini dealing with Phocas, Keil argued on stylistic grounds that the author of the De aspiratione is different from that of the Ars de nomine et verbo; this idea has now been revived and accepted by Kaster. If the literary ambitions of the Ars are limited, then those of this very brief work, which totals just two pages in Keil’s edition, are virtually nonexistent. Lacking any introduction or conclusion and without citations of literature or references to sources, the treatise limits itself to a discussion of those situations - in both Latin and Greek - where a syllable must be aspirated or psilotic. It occasionally includes a few exceptions. The manuscripts date to the 15^th c., and it is possible that the text is the work of an unknown humanist (Jeudy).  [S. Mollea; tr. C. L. Caterine].