Speciation
N.H. Barton, in:, A. Myers, P. Giller (Eds.), Analytical Biogeography: An Integrated Approach to the Study of Animal and Plant Distributions, 1st ed., Springer, 1988, pp. 185–218.

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.