Barton, N. H. (1988). Speciation. In A. Myers &; P. Giller (Eds.), Analytical biogeography: An integrated approach to the study of animal and plant distributions (1st ed., pp. 185–218). Springer.https://doi.org/10.1007/978-94-009-0435-4 
LibreCat: https://research-explorer.ista.ac.at/record/4317
DOI: 10.1007/978-94-009-0435-4

Coyne, J., &; Barton, N. H. (1988). What do we know about speciation? Nature. Nature Publishing Group.https://doi.org/10.1038/331485a0 
LibreCat: https://research-explorer.ista.ac.at/record/4315
DOI: 10.1038/331485a0

Barton, N. H., &; Jones, S. (1988). Molecular evolutionary genetics. Nature. Springer Nature.https://doi.org/10.1038/332597a0 
LibreCat: https://research-explorer.ista.ac.at/record/4316
DOI: 10.1038/332597a0