Evolutionary quantitative genetics: how little do we know?
N.H. Barton, M. Turelli, Annual Review of Genetics 23 (1989) 337–370.

Founder effect speciation
N.H. Barton, in:, D. Otte, J. Endler (Eds.), Speciation and Its Consequences, Sinauer Press, 1989.

A really temporal logic
R. Alur, T.A. Henzinger, in:, 30th Annual Symposium on Foundations of Computer Science, IEEE, 1989, pp. 164–169.