17. (2009). A smarter dummy. U.Va. engineers building “virtual” crash test dummy. Retrieved from http://uvamagazine.org/research_and_discovery/ article/a_smarter_dummy/
18.
19. (2009). Getting started with websites: Introduction. Retrievedfrom http://divyun.com/page/2/
20. (2010). Creative commons and intellectual property. Retrieved from http://chinesedrum.wordpress.com/