Volume 23, Number 1, August 1977
: Balanced sets and circuits in a transversal space.
Richard A. Brualdi
: Convex polytopes of permutation invariant doubly stochastic matrices.
, Howard Quaife
: Classification and enumeration of minimum (d, 1, 3)-graphs and minimum (d, 2, 3)-graphs.
: Matroids, generalized networks, and electric network synthesis.
: Critical perfect graphs and perfect 3-chromatic graphs.
Volume 23, Numbers 2-3, October - December 1977
: A product of matroids and its automorphism group.
James W. Uebelacker
: Product graphs for given subgroups of the wreath product of two groups, II.
Joseph A. Thas
: Two infinite classes of perfect codes in metrically regular graphs.
Robert James Douglas
: The maximum number of Kj-subgraphs in a graph with k independent edges.