ผู้เขียน: Gerhard Hoffmann

James Heitzman holds a Ph.D. in History from the University of Pennsylvania. He is Associate Professor in the Department of History, Georgia State University, Atlanta. His fields of interest include the history of South Asia, urbanization, science and technology. Wolfgang Schenkluhn is Professor of Medieval Art History at the Martin-Luther-University Halle-Wittenberg, Germany. His fields of research include medieval art and architecture.