Crisco JJ, Greenwald RM, Blume JD, Penna LH: Batting performance of wood and metal baseball bats. Medicine & Science in Sports & Exercise; 34(10):1675-84, 2002.

Greenwald RM, Penna LH, Crisco JJ: Differences in batted ball speed with wood and aluminum baseball bats: a batting cage study. J. Applied Biomechanics 17(3); 241-252, 2001.

Crisco JJ, Greenwald RM, Penna LH, Saul KR: On measuring the performance of wood baseball bats. In: The Engineering of Sport: Research, Development and Innovation. Subic & Haake Ed., Blackwells, London. pp 193 – 200, 2000.

Hendee SP, Greenwald RM, Crisco JJ: Static and dynamic properties of various baseballs. J. Applied Biomechanics, 14:390-400, 1998.

Crisco JJ, Hendee SP, Greenwald RM: The influence of baseball modulus and mass on head and chest impacts: a theoretical study. Med. Sci. Sports and Exer. Vol. 29(1):26-36,1997.

Crisco JJ, Greenwald RW: Metal baseballs can out perform wood bats with a similar "sweet spot". 24th Annual Meeting, American Society of Biomechanics. Chicago, IL. July 19-22, 2000.