[1. ISO/IEC 20000-1: 2005 Information technology - Service management - Part 1:Specification.]Search in Google Scholar
[2. ISO/IEC 20000-2: 2005 Information technology - Service management - Part 2: Code ofpractice.]Search in Google Scholar
[3. RICHARD PHARRO; ISO/IEC 20000 White Paper; [online]; [cit 2012-08-28]; Available on internet <www.apmg-international.com>]Search in Google Scholar
