Leonardo/Dürer : Renaissance master drawings on colored ground
edited by Ralph Gleis, Achim Gnann, and Christof Metzger ; foreword by Ralph Gleis ; texts by Nils Büttner, Achim Gnann, and Christof Metzger ; additional catalog entries by Carmen C. Bambach [and 7 others] ; with an art-technological essay by Eva Glück