Fortea Luna, Manuel, and Celia Loarte La Orden. “The Delicate Intervention in the Structure of Historic Buildings: The Case of San Millán De Los Balbases, Burgos”. Journal of Traditional Building, Architecture and Urbanism, no. 1 (November 20, 2020): 295 - 300. Accessed June 24, 2021. https://traditionalarchitecturejournal.com/index.php/home/article/view/354.