Iain Thomson. “Munich’s Mayor Claims €4m Savings from Linux Switch.” The Register, n.d. http://www.theregister.co.uk/2012/03/29/munich_linux_savings/.
Iain Thomson. “Munich’s Mayor Claims €4m Savings from Linux Switch.” The Register, n.d. http://www.theregister.co.uk/2012/03/29/munich_linux_savings/.