References
Samir Okasha
(2011). Précis of evolution and the levels of selection. Philosophy and Phenomenological Research 82 (1), pp. 212-220.
(2011). Reply to Sober and Waters. Philosophy and Phenomenological Research 82 (1), pp. 241-248.
(2003). Scepticism and its sources. Philosophy and Phenomenological Research 67 (3), pp. 610-632.
(2002). Darwinian metaphysics: species and the question of essentialism. Synthese 131 (2), pp. 191-213.