by Magnenat-Thalmann, N | Thalmann, D.
by Itten, Johannes.
by Bosworth, Seymour | Kabay, M. E.
by Heinkel, Ulrich.
by Pashler, Hal | Yantis, Steven.
by Steele, Raymond.
by Clark, Ti.
by Rankl, Wolfgang | Effing, Wolfgan.
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