1. Malinowski R (1982) Ancient mortars and concretes: aspects of their durability. In: Histoire of technology, 7th annual volume, Mansell, UK, pp 89–101
2. Boynton R (1980) Chemistry and technology of lime and limestone, 2nd edn. Wiley, New York
3. Torraca G (1988) Porous materials building. In: Materials science for architectural conservation (3rd ed). ICCROM, Roma
4. Adam JP (1989) La construction romaine. In: Matériaux et Techniques (2nd éd). Grand Manuel Picard, Paris
5. Vasconcelos F (1991) Decorative gypsum plasters from the North of Portugal (in Portuguese). Calouste Gulbenkian Foundation and Regional Centre of Traditional Arts, Porto