Roman Signer, Installation hélicoptère 1990, pilot: Armin Caspari, Video: Simon Lamunière, Edition: Video U-Matic and VHS, 5 min, sound, colours, Pal. U-Matic: edition of 10 plus 5 H.C., numbered and signed. VHS: edition of 20 plus 4 H.C., numbered and signed. Edition of the Centre genevois de gravure contemporaine, Geneva, 1990.