The university is a member of the Coimbra Group, an association of long-established European multidisciplinary universities of high international standard.
He also attended The University of Laval and Paul Valéry University in France.
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During the 1990s, after a teaching exchange visit to Paul Valery University in Montpellier inspired an interest in the Cathars of Southern France, he started working on Languedoc Variorum: A Defense of Heresy and Heretics.