https://www.theguardian.com/world/2016/apr/07/muslim-lifestyle-expo-london-global-brands-spending-power?CMP=Share_iOSApp_Other
http://www.ingentaconnect.com/content/intellect/jammr/2010/00000003/F0020001/art00001
http://www.mostresource.org/storybank/muslims-influence-on-global-digital-economy-climbs/