ELA articles which reference this paper are

Wayne Barrett; Camille Jepsen; Robert Lang; Emily McHenry; Curtis Nelson; Kayla Owens
Inertia sets for graphs on six or fewer vertices,
Electron. J. Linear Algebra 20 (2010), 53-78.

C. Ekstrand, C. Erickson, D. Hay, L. Hogben and J. Roat
Note on positive semidefinite maximum nullity and positive semidefinite zero forcing number of partial 2-trees.
Electron. J. Linear Algebra 23 (2012) 79-87.