No barriers to speciation
N.H. Barton, S. Jones, J. Mallet, Nature 336 (1988) 13–14.

What do we know about speciation?
J. Coyne, N.H. Barton, Nature 331 (1988) 485–486.

Molecular evolutionary genetics
N.H. Barton, S. Jones, Nature 332 (1988) 597–597.

Mitochondrial DNA: new clues about evolution
N.H. Barton, S. Jones, Nature 306 (1983) 317–318.