Research of Wis Comfort on ultrafilters and the Stone-Cech compactification (to appear in Topology and its Applications)

(With L. Jones and D. Strauss) The relationships among many notions of largeness for subsets of a semigroup (to appear in Semigroup Forum)

A history of central sets (to appear in Ergodic Theory and Dynamical Systems)

(With D. Strauss) Image partition regularity of matrices over commutative semigroups (to appear in Topology and its Applications)

(With W. Brian) Factoring a minimal ultrafilter into a thick part and a syndetic part

(With D. Strauss and L. Zamboni) Combining extensions of the Hales-Jewett Theorem with Ramsey Theory in other structures

Notions of size in a semigroup -- an update from a historical perspective