Francisco J. Ayala

with Ruiz, R. , 2001, Darwinism: its hard core, in T. F. Glick, M. A. Puig-Samper & R. Ruiz (eds.), The reception of Darwinism in the Iberian world, Dordrecht, Springer, pp. 239-261.

, 1996a, The nature of science and the problem of demarcation, in G. Munvar (ed.), Spanish studies in the philosophy of science, Dordrecht, Springer, pp. 123-142.