McCallum, Michael James, Tiago Lopes-Correia, and Jorge Ricardo-da-Silva. “Chemical Evaluation of Carcavelos Fortified Wine Aged in Portuguese (Quercus Pyrenaica) and French (Quercus Robur) Oak Barrels at Medium and High Toast”. OENO One 53, no. 3 (September 9, 2019). Accessed September 23, 2019. https://oeno-one.eu/article/view/2284.