1. W. Arden etal "Morethan-moore white paper." W. Arden et al. "Morethan-moore white paper."
2. Inside the iPhone 5s "https://www.chipworks.com/about-chipworks/overview/blog/inside-the-iphone-5s". Inside the iPhone 5s "https://www.chipworks.com/about-chipworks/overview/blog/inside-the-iphone-5s".