1. AAVV, Ecological Footprint – Un approfondimento sull’impronta ecologica dell’edilizia residenziale in Italia, Documenti IAED nr, 8th edn. (Papageno, Palermo, 2004)
2. S. Achim, K. Ashok, Foreword in Pauli G., “The Blue Economy: 10 Years, 100 Innovations, 100 Million Jobs” Report to the Club of Rome (Paradigm Publications, Taos, 2010)
3. P. Berg, Welcome Speech from the First Bioregional Congress of North America, (1984)
4. P. Berg, R. Dasmann, Reinhabiting California. The Ecologist 7(10) (1977)
5. A. Campioli, M. Lavagna, Misurare la sostenibilità: il laterizio. Costruire in laterizio 143, 65–71 (2011)