Robert L Volz with the assistance of Wayne G. Hammond. by Robert Gilpin with the assistance of Jean M. Gilpin. Beverly Hong with the assistance of Zhu Bingyao. Graham Reynolds with the assistance of Katharine Baetjer. with the assistance of Roger T. Kaufman. by Robert Gilpin with the assistance of Jean Millis Gilpin Conrad A. Balliet ; with the assistance of Christine Mawhinney. A S Horndy with the assistance of chyistina R Compiled with the Assistance of Johannes Weiss Julian Brooks ; with the assistance of Alessandra Nardi.