Prof. Hans Wondratschek, Institut für Kristallographie, Universität Karlsruhe, Germany. Prof. Ulrich Müller, Fachbereich Chemie, Philipps-Universität, GermanyProfessor Müller's research interests focus on synthetic inorganic chemistry, structural analysis of crystalline solids by x-ray diffraction, and application of crystallographic group theory. He has authored several books including Chemie, a textbook for beginners, and Inorganic Structural Chemistry, a bestselling Wiley textbook.