1. EMAS, European Commission, “Council Regulation (EEC) No 1836/93 of 29 June 1993, Allowing Voluntary Participation by Companies in the Industrial Sector in a Community Eco-management and Audit Scheme. (EMAS Regulation)”, Brussels, 1993 and European Commission, (Reynaud, Sandra), Commission Proposal for the Revision of EMAS Letter from: Industrial Affairs Department, E mail: s.raynaud@unice.be, ref. SR/ne/10.5/2-636, November 5., Luxembourg, 1998.
2. ISO, NS-EN ISO 14001. Guide to Environmental Management Principles, Systems and Supporting Techniques. International Organization for Standardization (ISO), Geneva, 1996.
3. NHO, WEB server: http://www.nho.no, Confederation of Norwegian Business and Industry (NHO), Oslo, Norway, 2000.
4. ISO World, Internet: www.ecology.or.jp/isoworld/english/analy14k.htm, 2000.
5. Brønnøysund Register, The National Register Collecting and Registering the EMAS-Approved Companies in Norway, Brønnøysund, Norway, 2000.