1. AEEG, 2011. Delibera ARG/gas 45/11. Disciplina del bilanciamento di merito economico del gas naturale, Rome14 Aprile 2011.
2. AEEG, 2012. Relazione annuale sullo stato dei servizi e sull’attività svolta, Milan, Italy (http://www.autorita.energia.it/it/relaz_ann/12/12.htm).
3. Real options model to evaluate infrastructure flexibility: An application to photovoltaic technology;Calabrese;International Journal of Technology Management,2005
4. Turning CSR-Driven Opportunities in Competitive Advantages: a Two-Dimensional Model;Calabrese;Knowledge and Process Management,2013
5. Capece, G, Cricelli, L, Di Pillo, F., & Levialdi N. (2008). A productivity analysis of the Italian gas retail market. In: Aravossis, Brebbia, Gomez editors. Environmental Economics and Investment Assessment II, vol. 108, Southampton, UK: WIT Transactions on Ecology and the Environment, 43-52.