Damascius (Δαμάσκιος). Ἀπορίαι καὶ λύσεις περὶ τῶν πρώτων ἀρχῶν
          (Aporiai kai lyseis peri tōn prōtōn archōn: Problems and Solutions Concerning First Principles),
          or Dubitationes et Solutiones de Primis Principiis (Doubts and Solutions Concerning First Principles). c AD 520/530:

Kopp, Joseph, ed. Δαμασκίου διαδόχου ἀπορίαι καὶ Λύσεις περὶ τῶν Πρώτων Ἀρχῶν. Damascii Philosophi Platonici Quæstiones de Primis Principiis. Αd Fidem Codd. Mscrr. Nunc Primum. Francofurti ad Mœnum: H L Brönner, 1826.
https://dn720703.ca.archive.org/0/items/bub_gb_vSktvALnbHIC/bub_gb_vSktvALnbHIC.pdf.

Ruelle, Charles Émile, ed. Δαμασκίου Διαδόχου Ἀπορίαι καὶ λύσεις περὶ τῶν πρώτων ἀρχῶν εἰς τὸν Πλάτωνος Παρμενίδην: Damaskiu Diadochu aporiai kai lyseis peri tōn prōtōn archōn eis ton Platōnos Parmenidēn. pars prior, Volume 1. Paris: C. Klincksieck, 1889.
https://books.google.com/books/about/Δαμασκίου_Διαδόχου_Ἀ.html?id=2YkXBrM95XkC.

Ahbel-Rappe, Sara, tr. Damascius’ Problems and Solutions Concerning First Principles. Oxford: Oxford University Press, 2010. 978-0-1951-5029-2, 0-1951-5029-5.
https://apotheism.org/wp-content/uploads/2021/04/damascius-problems-and-solutions-concerning-first-principles.pdf;
https://ia801000.us.archive.org/20/items/damascius-problems-and-solutions-concerning-first-principles-aar-religions-in-tr/Damascius%27%20Problems%20and%20Solutions%20Concerning%20First%20Principles%20%28Aar%20Religions%20in%20Translation%29%20%28%20PDFDrive.com%20%29.pdf;
https://www.academia.edu/66019718/Damascius_Problems_and_Solutions_Concerning_First_Principles.