Universal Limited Art Editions, University of Minnesota Gallery — 1966. Édition, PHI-E-000000000248. Philemone, version publique 1, publiée le 2026-10-10. https://philemone.com/editions/PHI-E-000000000248/universal-limited-art-editions-university-of-minnesota-gallery-1966 (consulté le 2026-10-30).