Cosmos of the Ancients: Empedocles - Short article by Stephen Stenudd reviewing the cosmological aspects of Empedocles' writings, and Aristotle's reaction to them.
Dr. Edward Zeller on Empedocles - From Zeller's 1889 work, Outlines of the History of Greek Philosophy. Considers the scientific and mystic aspects of Empedocles' teachings.
Empedocles of Agrigentum at Peithô's Web - Includes the Leonard translation of the Empedocles' fragments alongside the original Greek, as well as the Life of Empedocles from Diogenes Laertius.
The Structure of Empedocles' Fragment 17 - A 2000 paper by Simon Trepanier. An intensive study of this, the longest and most illuminating of Empedocles' fragments.