Combinatorial and Geometric Structures and Their Applications

Matroid Theory and Its Applications: Lectures given at a Summer School of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, August 24 - September 2, 1980

Generators and Relations in Groups and Geometries

Combinatorics '81: In Honour of Beniamino Segre

Combinatorics '86

Combinatorics '90: Recent Trends and Applications