On a tree-partition problem. - Peter Katrenic; Gabriel Semanisin (Electron. Notes Discret. Math., 2007)

Progress on the Traceability Conjecture for Oriented Graphs. - Marietjie Frick; Peter Katrenic (Discret. Math. Theor. Comput. Sci., 2008)

A note on the Path Kernel Conjecture. - Peter Katrenic; Gabriel Semanisin (Discret. Math., 2009)

Traceability of k-traceable oriented graphs. - Susan A. van Aardt; Jean E. Dunbar; Marietjie Frick; Peter Katrenic; Morten Hegner Nielsen; Ortrud R. Oellermann (Discret. Math., 2010)

The order of hypotraceable oriented graphs. - Susan A. van Aardt; Marietjie Frick; Peter Katrenic; Morten Hegner Nielsen (Discret. Math., 2011)