How often do determinants over finite fields vanish? - William C. Waterhouse (Discret. Math., 1987)

Orthogonal Matrices and the Matrix Exponential (Dennis S. Bernstein). - William C. Waterhouse (SIAM Rev., 1991)

A Unique Vector Sum (Rudolf K. Meyer). - William C. Waterhouse; A. A. Jagers (SIAM Rev., 1994)

A Conditional Trace Inequality (Paul A. Roediger). - R. R. Burnside; William C. Waterhouse (SIAM Rev., 1996)

Some Boundary Problems with Even or Odd Solutions. - William C. Waterhouse (SIAM Rev., 1996)

Nonconstant Functions with Derivative Zero: 10772. - William C. Waterhouse; Steve Butcher (Am. Math. Mon., 2000)

Cochran's Theorem for Rings. - William C. Waterhouse (Am. Math. Mon., 2001)

Quadratic Polynomials and Unique Factorization. - William C. Waterhouse (Am. Math. Mon., 2002)

Problem 11186. - Angelo J. Christino Jr.; William C. Waterhouse (Am. Math. Mon., 2005)

A Group of Invertible Matrices: 11186. - Angelo J. Christino Jr.; William C. Waterhouse; et al. (Am. Math. Mon., 2007)

Square Root as a Homomorphism. - William C. Waterhouse (Am. Math. Mon., 2012)