"Fondazione Federico Zeri - Università di Bologna, ente catalogatore della fotografia \"Harvard University Art Museums, Fogg Art Museum , X-ray photograph of Badile, Portrait of a Woman, Detail of Head\""@it . "Federico Zeri Foundation, cataloguing institution of the photograph \"Harvard University Art Museums, Fogg Art Museum , X-ray photograph of Badile, Portrait of a Woman, Detail of Head\""@en . . . . .