2011ANSI/ASTM F2845:2011 Test Method for Measuring the Dynamic Stiffness (DS) and Cylindrical Coefficient of Restitution (CCOR) of Baseballs and Softballs
2010BS DD CEN ISO/TS 22117:2010 Microbiology of food and animal feeding stuffs. Specific requirements and guidance for proficiency testing by interlaboratory comparison