First published in conjunction with the exhibition 'Leonardo da Vinci: Joseph Beuys. Der Codex Leicester im Spiegel der Gegenwart', held at the Haus der Kunst, Munich, 15 October, 1999 - 9 January, 2000 and at the Museum der Dinge, Martin Gropius Bau, Berlin, 30 January - March 2000.
Leonardo da Vinci : dreams, schemes and flying machines by Heinz Kühne. ISBN 3791321668. Published by Prestel in 1999. Publication and catalogue information, links to buy online and reader comments.