Detour Chromatic Numbers. - Frank Bullock; Marietjie Frick (Discuss. Math. Graph Theory, 2001)

Path Partitions and Pn-free Sets. - Jean E. Dunbar; Marietjie Frick; Frank Bullock (Electron. Notes Discret. Math., 2002)

Path partitions and Pn-free sets. - Jean E. Dunbar; Marietjie Frick; Frank Bullock (Discret. Math., 2004)

Smallest claw-free, 2-connected, nontraceable graphs and the construction of maximal nontraceable graphs. - Frank Bullock; Marietjie Frick; Joy Singleton (Discret. Math., 2007)

Nontraceable detour graphs. - Frank Bullock; Marietjie Frick; Gabriel Semanisin; Róbert Vlacuha (Discret. Math., 2007)

Maximal Nontraceable Graphs with Toughness less than One. - Frank Bullock; Marietjie Frick; Joy Singleton; Susan A. van Aardt; Christina M. Mynhardt (Electron. J. Comb., 2008)

On detour homogeneous digraphs. - Susan A. van Aardt; Frank Bullock; Joanna Górska; Zdzislaw Skupien (Discret. Math., 2009)

Hamiltonicity of k-Traceable Graphs. - Frank Bullock; Peter Dankelmann; Marietjie Frick; Michael A. Henning; Ortrud R. Oellermann; Susan A. van Aardt (Electron. J. Comb., 2011)