Niche graphs and mixed pair graphs of tournaments. - Steve Bowser; Charles Cable; J. Richard Lundgren (J. Graph Theory, 1999)

The Niche Category of Dense Graphs. - Steve Bowser; Charles Cable (Ars Comb., 2001)

The Niche Category of Sparse Graphs. - Steve Bowser; Charles Cable (Ars Comb., 2003)