Catholic Encyclopedia: Scotism and Scotists - Long article on the school of philosophy inspired by John Duns Scotus, and its proponents in the fourteenth through nineteenth centuries. www.newadvent.org/cathen/13610b.htm
Stanford Encyclopedia of Philosophy: John Duns Scotus - In-depth article on the life, work, and thought of John Duns Scotus. By Thomas Williams, professor of philosophy at the University of Iowa. plato.stanford.edu/entries/duns-scotus