BALLON VILLANUEVA, R. “Explicatio and Ratio Naturae. Medieval Understandings of the Origin of the Universe. Universidad De Navarra, Pamplona (Spain), 16 January 2018. Organiser: Maria Jesús Soto-Bruna (Universidad De Navarra”. Revista Española De Filosofía Medieval, vol. 25, Dec. 2018, pp. 261-3, doi:10.21071/refime.v25i.11653.