Hidalgo-Fuentes, Sergio, et al. “Scooter Crashes in the Province of Barcelona (Spain) From 2006 to 2011: A Descriptive Study”. RA Journal Of Applied Research, vol. 3, no. 10, Oct. 2017, pp. 1087-90, http://www.rajournals.in/index.php/rajar/article/view/132.