1. AAA Foundation for Traffic Safety, 2010. Traffic safety culture index, AAA Foundation for Traffic Safety, Washington, DC. http://www.aaafoundation.org/reports (retrieved 30.01.12)
2. AAA & Kurgo Pet Passenger Safety Survey, 2012. Doggie distraction fact sheet. http://www.kurgostore.com/content/news/2010/2011/2011_survey_sheet.pdf (retrieved 30.01.12).
3. American Veterinary Medical Association, 2007. U.S. pet ownership and demographics sourcebook. http://www.avma.org/reference/marketstats/sourcebook.asp (retrieved 06.02.12).
4. Can high-risk older drivers be identified through performance-based measures in a department of motor vehicles setting?;Ball;Journal of the American Geriatric Society,2006
5. A computerized method of visual acuity testing: adaptation of the early treatment of diabetic retinopathy study testing protocol;Beck;American Journal of Ophthalmology,2003