1. 2005-2019. Canvas API. https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API.
2. Seyed Hossein Ahmadpanah. 2015. What is Angular. js?! (2015).
3. Kent Beck and Ralph Johnson. 1994. Patterns generate architectures. In Object-Oriented Programming, Mario Tokoro and Remo Pareschi (Eds.). Springer Berlin Heidelberg, Berlin, Heidelberg, 139--149.
4. Kent Cunningham, Ward Beck. 1994. A CRC Description of HotDraw. http://c2.com/doc/crc/draw.html
5. Erich Gamma, Richard Helm, Ralph Johnson, and John M. Vlissides. 1994. Design Patterns: Elements of Reusable Object-Oriented Software (1 ed.). Addison-Wesley Professional. http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612/ref=ntt_at_ep_dpi_1