Stephen Hall ; with a foreword by Ti Liang Yang. Stephen Taylor ; with a foreword by Ehud Shapiro. Pierre Sagaut ; with a foreword by Massimo Germano. E H J Pallett ; with a foreword by Sir Vernon Brown. Chuang Hua ; with a foreword by Amy Ling. Henryk Minc ; with a foreword by Marvin marcus. translated, with a foreword by Benedicta Ward. Egbert Torenbeek ; with a foreword by H. Wittenberg. J. S. Rogers ; with a foreword by T. H. Laby. Luis A. Santalo ; with a foreword by Mark Kac.