"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''
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