Group divisible designs with two associate classes, and quadratic leaves of triple systems. - Joe Chaffee; C. A. Rodger (Discret. Math., 2013)

Quadratic excesses or paddings of covers with triples of λKn. - Joe Chaffee (Australas. J Comb., 2014)

Dimension 4 and dimension 5 graphs with minimum edge set. - Joe Chaffee; Matt Noble (Australas. J Comb., 2016)

Decomposition of a Complete Bipartite Multigraph into Arbitrary Cycle Sizes. - John Asplund; Joe Chaffee; James M. Hammer (Graphs Comb., 2017)

A Dimension 6 Graph with Minimum Edge-set. - Joe Chaffee; Matt Noble (Graphs Comb., 2017)