2. [http://www.deloitte.co.uk/fast500emea/fast-500-winners/winners-2009/_Key-Systems_Fast50.pdf "2009 Deloitte Technology Fast 500 EMEA Ranking and CEO Survey"] ''Deloitte'' | 2. [http://www.deloitte.co.uk/fast500emea/fast-500-winners/winners-2009/_Key-Systems_Fast50.pdf "2009 Deloitte Technology Fast 500 EMEA Ranking and CEO Survey"] ''Deloitte'' |