The Maximum Length of a Powerful Arithmetic Progression: 10702. - Kent D. Boklan; John P. Robertson (Am. Math. Mon., 2000)

Elliptic Curves to the Rescue: 10612. - John P. Robertson (Am. Math. Mon., 2000)

A Continued Fractions Approach to a Result of Feit. - John P. Robertson; Keith R. Matthews (Am. Math. Mon., 2008)

Corrigenda to "Calculation of the regulator of Q(√D) by use of the nearest integer continued fraction algorithm". - Keith R. Matthews; John P. Robertson; Jim White (Math. Comput., 2009)

Midpoint criteria for solving Pell's equation using the nearest square continued fraction. - Keith R. Matthews; John P. Robertson; Jim White (Math. Comput., 2010)

Extending Theorems of Serret and Pavone. - Keith R. Matthews; John P. Robertson; Anitha Srinivasan (J. Integer Seq., 2017)