1. Bernardo M, Casadesus M, Karapetrovic S, Heras I. Management systems: integration degrees. Empirical study. In: Proceedings of the 11th QMOD Conference, Helsingborg, Sweden, August 20–22; 2008.
2. The ISO survey of certifications;ISO,2007
3. ISO 14001:2004. International standard: environmental management systems – requirements with guidance for use;ISO,2004
4. ISO 14001 diffusion after the success of the ISO 9001 model;Casadesus;Journal of Cleaner Production,2008
5. ISO 9000:2005. International standard: quality management systems – fundamentals and vocabulary;ISO,2005