1. Alexa Internet Inc. Alexa - Top Sites in United States. http://www.alexa.com/topsites/countries/US Apr. 2014. Alexa Internet Inc. Alexa - Top Sites in United States. http://www.alexa.com/topsites/countries/US Apr. 2014.
2. Cider
3. Apple Inc. SunSpider 1.0.2 JavaScript Benchmark. https://www.webkit.org/perf/sunspider/sunspider.html 2013. Apple Inc. SunSpider 1.0.2 JavaScript Benchmark. https://www.webkit.org/perf/sunspider/sunspider.html 2013.
4. Apple Inc. iOS Device Compatibility Reference: OpenGL ES Graphics. https://developer.apple.com/library/ios/documentation/DeviceInformation/Reference/iOSDeviceCompatibility/OpenGLESPlatforms/OpenGLESPlatforms.html#//apple_ref/doc/uid/TP40013599-CH106-SW1 Feb. 2014. Apple Inc. iOS Device Compatibility Reference: OpenGL ES Graphics. https://developer.apple.com/library/ios/documentation/DeviceInformation/Reference/iOSDeviceCompatibility/OpenGLESPlatforms/OpenGLESPlatforms.html#//apple_ref/doc/uid/TP40013599-CH106-SW1 Feb. 2014.