1 + 1 = 3

»1 + 1 = 3  ::  Die Wirklichkeit der 3. Dimension in der Stereoskopie«  -  leporello-poster, Goch 1993
Exhibition catalog in the kind of a poster-leporello. — Besides illustrations explaining the function of stereoscopy, the Chessboardanamorphosis (s/w) and the stereoscopic painting Darts (full color) are shown, also included the following contributions:


Joerg Becker: 1 + 1 = 3
23 x 25 cm (folded: leporello) resp. 69 x 50 cm (unfolded: poster)
Museum fuer Kunst und Kulturgeschichte, Goch 1993
ISBN 3-926245-19-0