- Critical Pebbling Numbers of Graphs

with Courtney Gibbons* and Erick Paul*

submitted to*Discrete Mathematics* - Finite Prime Distance Graphs and 2-Odd Graphs

with Colin Starr and Andrea Walker*

*Discrete Mathematics***313**(October 2013), no. 20, 2281–2291. - More Directions in Visibility Graphs

with Ellen Gethner

*Australasian Journal of Combinatorics***50**(2011), 55-65. - Subspace Intersection Graphs

with Yulan Qing*

*Discrete Mathematics***310**(2010), no. 23, 3413-3416. - Triangle, Parallelogram, and Trapezoid Orders

with Kenneth P. Bogart and Stephen P. Ryan

*Order***27**(2010), no. 2, 163-175. - Obstacle Numbers of Graphs

with Hannah Alpert* and Christina Koch*

*Discrete and Computational Geometry***44**(2010), no. 1, 223-244. - Fixing Numbers of Graphs and Groups

with Courtney R. Gibbons*

*Electronic Journal of Combinatorics***16**(2009), no. 1 (electronic). - Dual Unfoldings of Polyhedra

with John J. Watkins and Lucian Wilson*

*Congressus Numerantium***191**(2008), 161-172. - Unit and Proper Tube Orders
*Order***25**(2008), no. 3, 237-242. - Seeing dots: Explorations on the visibility of lattice points

with Michelle Schick*

*Mathematics Magazine***80**(2007) no. 4, 274-282. - Bar
*k*-visibility graphs

with Alice M. Dean, William Evans, Ellen Gethner, Mohammed A. Safari, and William T. Trotter

*The Journal of Graph Algorithms and Applications***11**(2007) no. 1, 45-59. - Bar
*k*-visibility graphs: Bounds on the number of edges, chromatic number, and thickness

with Alice M. Dean, William Evans, Ellen Gethner, Mohammed A. Safari, and William T. Trotter

in*Graph Drawing*, Proceedings of the 13th International Symposium on Graph Drawing, Lecture Notes in Computer Science, Springer (2006) - Tube representations of ordered sets

*Order***21**(2005), no. 3, 209-232.

- Free triangle orders

*Order***20**(2003), no. 2, 99-108.

- Comparability invariance results for tolerance orders

with Kenneth P. Bogart, Garth Isaak, and Ann N. Trenk

*Order***18**(2001), no. 3, 281-294.

- Just Visiting

*The Notices of the American Mathematical Society***56**(2009), no. 11, 1451-1454. -
My Experiences Researching With Undergraduate Mathematicians: The Collaboration
Model

in Joseph A. Gallian, editor,*Proceedings of the Conference on Promoting Undergraduate Research in Mathematics*, American Mathematical Society, 2007.

**Expository Articles**

*student co-author