Prof. Nancy S. Steinhardt

Professor of East Asian Art and Curator of Chinese Art at the University of Pennsylvania, Pennsylvania

Joko Suroso

Faculty of Teacher Training and Education, National Islamic University of Kiai Haji Achmad Shiddiq Jember, East Java Indonesia

Elza M M Fonseca
(LAETA, INEGI, Department of Mechanical Engineering, Polytechnic Institute of Porto, ISEP, Porto, Portugal)