1. The Growth of Mobile Marketing and Tagging, http://tag.microsoft.com/community/blog/t/the_growth_of_mobile_marketing_and_tagging.aspx.
2. URL as UI, http://www.useit.com/alertbox/990321.html.
3. Resource Locators (URL), http://www.hjp.at/doc/rfc/rfc1738.html.
4. Mobile Web Best Practices 1.0, http://www.w3.org/TR/mobile-bp/.
5. Optimizing a website for mobile devices, http://modernnomads.info/wiki/index.php?page=Optimizing+a+website+for+mobile+devices.