Here are some of the highlights from work done with excellent mathematicians (Katy Smith, Jeremy Holden and Addie Armstrong) who were undergraduate students at the time that these papers were submitted.
Addie Armstrong and Dan McQuillan, Vertex-magic total labelings of even complete graphs, Discrete Math. 311 (2011) pp. 676-683.
Jeremy Holden, Dan McQuillan and James M. McQuillan, A conjecture on strong magic labelings of 2-regular graphs, Discrete Mathematics, 309 (2009), pp. 4130-4136.
Dan McQuillan and Katy Smith, Vertex-magic total labeling of multiple complete graphs, Congressus Numerantium 180 (2006) pp. 201-205.
Dan McQuillan and Katy Smith, Vertex-magic total labeling of odd complete graphs, Discrete Math. 305 (2005) pp. 240-249.