In the context of the second french congress on construction history, that took place in Lyon (France), Jorge Portal had been invited and presented a paper titled "Abbeys's churches of Poblet and Fontfroide: balance and model".

For further informations of the conference's publication:

http://www.sciencedirect.com/science/article/pii/S135063071400315X

More information:

http://2cfhc.sciencesconf.org/