Symmetry Operators of Kranz Products. - S. G. Williamson (J. Comb. Theory A, 1971)

The combinatorial analysis of patterns and the principle of inclusion-exclusion. - S. G. Williamson (Discret. Math., 1972)

Isomorph Rejection and a Theorem of De Bruijn. - S. G. Williamson (SIAM J. Comput., 1973)

On Backtracking: A Combinatorial Description of the Algorithm. - Jay P. Fillmore; S. G. Williamson (SIAM J. Comput., 1974)

Computational Algorithms for the Enumeration of Group Invariant Partitions. - Dennis E. White; S. G. Williamson (SIAM J. Comput., 1975)

Ranking Algorithms: The Symmetries and Colorations of the n-Cube. - Jay P. Fillmore; S. G. Williamson (SIAM J. Comput., 1976)

Ranking Algorithms for Lists of Partitions. - S. G. Williamson (SIAM J. Comput., 1976)

Recursive Matching Algorithms and Linear Orders on the Subset Lattice. - Dennis E. White; S. G. Williamson (J. Comb. Theory A, 1977)

L'arbre des cycles d'un graphe. - S. Gill Williamson (CLAAP, 1980)

Combinatorial Gray codes. - James T. Joichi; Dennis E. White; S. G. Williamson (SIAM J. Comput., 1980)

Central and Local Limit Theorems Applied to Asymptotic Enumeration. III. Matrix Recursions. - Edward A. Bender; L. Bruce Richmond; S. G. Williamson (J. Comb. Theory A, 1983)

Depth-First Search and Kuratowski Subgraphs. - S. G. Williamson (J. ACM, 1984)

Foundations of applied combinatorics. - Edward A. Bender; S. G. Williamson (Addison-Wesley, 1991)

Evolving Compare-Exchange Networks Using Grammars. - Thomas E. Kammeyer; Richard K. Belew; S. G. Williamson (Artif. Life, 1995)

Periodic Sorting Using Minimum Delay, Recursively Constructed Merging Networks. - Edward A. Bender; S. Gill Williamson (Electron. J. Comb., 1998)

Large-Scale Regularities of Lattice Embeddings of Posets. - Jeffrey B. Remmel; S. Gill Williamson (Order, 1999)

Spanning Trees and Function Classes. - Jeffrey B. Remmel; S. G. Williamson (Electron. J. Comb., 2002)

A Class Of Graphs Which Has Efficient Ranking And Unranking Algorithms For Spanning Trees And Forests. - Ömer Egecioglu; Jeffrey B. Remmel; S. G. Williamson (Int. J. Found. Comput. Sci., 2004)