Sellers, James A. and Williams, Hugh. "On the infinitude of composite {NSW} numbers". The Fibonacci Quarterly. The Official Journal of the Fibonacci Association 40.3 (2002): 253-254. Print.
Lukes, R. F., Patterson, C. D. and Williams, Hugh. "Some results on pseudosquares". Mathematics of Computation 65.213 John Wiley & Sons Inc., (1996): 361-372, S25-S27. Print.
Bach, Eric, Lukes, Richard, Shallit, Jeffrey and Williams, Hugh. "Results and estimates on pseudopowers". Mathematics of Computation 65.216 John Wiley & Sons Inc., (1996): 1737-1747. Print.
Shallit, Jeffrey, Williams, Hugh and Morain, Fran. "Discovery of a lost factoring machine". The Mathematical Intelligencer 17.3 John Wiley & Sons Inc., (1995): 41-47. Print.
Mollin, Richard and Williams, Hugh. "Solution of a problem of {Y}okoi". Japan Academy. Proceedings. Series A. Mathematical Sciences 66.6 (1990): 141-145. Print.
Williams, Hugh. "Eisenstein's problem and continued fractions". Utilitas Mathematica. An International Journal of Discrete and Combinatorial Mathematics, and Statistical Design 37. (1990): 145-157. Print.
Williams, Hugh. "Note on a diophantine equation". Elemente der Mathematik. Eine Zeitschrift der Schweizerischen Mathematischen Gesellschaft. Une Revue de la Soci\'et\'e Math\'ematique Suisse. Una Rivista della Societ\`a Matematica Svizzera 25. (1970): 123-125. Print.
Stanton, R. G., Williams, Hugh and Zarnke, C. R.. "A packing problem". Canadian Mathematical Bulletin. Bulletin Canadien de Math\'ematiques 10. (1967): 287-297. Print.