by Hanspeter Kraft and Gerald W. Schwarz . par Yves Benoist et François Labourie . by G. Lusztig . by Mikhail Gromov and Richard SchoenInstitut des hautes études scientifiques1992
edited by Takeshi Kotake, Seiki Nishikawa, Richard Schoen ; supported by The Commemorative Association for the Japan World Exposition (1970), The Kawai Foundation for the Promotion of Mathematical Science, The Grants-in-Aid for Co-operative Research of the Ministry of Education, Science and Culture, Japan[s.n.][1993]