On the Chromatic Roots of Generalized Theta Graphs. - Jason I. Brown; Carl A. Hickman; Alan D. Sokal; David G. Wagner (J. Comb. Theory B, 2001)

On chromatic roots with negative real part. - Jason I. Brown; Carl A. Hickman (Ars Comb., 2002)

On chromatic roots of large subdivisions of graphs. - Jason I. Brown; Carl A. Hickman (Discret. Math., 2002)

The independence fractal of a graph. - Jason I. Brown; Carl A. Hickman; Richard J. Nowakowski (J. Comb. Theory B, 2003)

The k-fractal of a simplicial complex. - Jason I. Brown; Carl A. Hickman; Richard J. Nowakowski (Discret. Math., 2004)