I. Corso, 2011 Omission of indication of safety costs in subcontractor, main contractor, and supply contracts: points for reflection on validity pursuant to C.C. Art. 1418 as sanction, in M.T. Carinci, C. Cester, M.G. Mattarolo, F. Scarpelli (eds), Accident-prevention and safety at the workplace in public and private tender contracts. Legal framework and effectiveness, Utet, pp 155 -180