"Valiant has contributed in a decisive way to the growth of almost every branch of the fast growing young tree of theoretical computer science, his theory of counting problems being perhaps his most important and mature work''
Volker Strassen

This document has been reproduced from

Albers, Donald J.; Alexanderson, G. L.; Reid, Constance:
International mathematical congresses. An illustrated history 1893 - 1986
Rev. ed. including ICM 1986. Springer-Verlag, New York, 1986

with friendly permission from Springer Verlag