1. All-terrain vehicles: two-, three-, and four-wheeled unlicensed motorized vehicles;Pediatrics,1987
2. 2008 Rulebook: Governing Pro-Am, Standard, ATV, and Youth Competition,2008
3. National hospitalization impact of pediatric all-terrain vehicle injuries;Killingsworth;Pediatrics,2005
4. No license required: severe pediatric motorbike-related injuries in Ohio;Pomerantz;Pediatrics,2005
5. Motor cycle injuries in speed sport for youngsters;Fontijne;J Sports Med Phys Fitness,1989