Artwork, 1959 Receipt to Jacques Kugel for transfert of a Zone of Immaterial Pictorial Sensibility. Series n°1, Zone n°02
Artwork, 1959 Receipt to Peppino Palazzoli for transfert of a Zone of Immaterial Pictorial Sensibility. Series n°1, Zone n°01
Artwork, 1960 Empreintes d'eaux colorées, de feuilles et de branches [Impression of Colored Water, Leaves and Branches]
Artwork, 1960 Empreinte du fond d'une baignoire vide dont l'eau avait été colorée de Vermillon et de Bleu de Prusse [Impression of the Bottom of an Empty Bathtub which Water had been Colored by Vermillon and Prussian Blue]