1. Dietary substances not required in human metabolism;Bucci,1993
2. Caffeine and sports activity: a review;Nehlig;Int J Sports Med,1994
3. Caffeine and exercise performance. An update;Dodd;Sports Med,1993
4. Caffeine and exercise performance;Graham,1996
5. Food labeling; statement of identity, nutrition labeling and ingredient labeling of dietary supplements; compliance policy guide, revocation;Department of Health and Human Services;Fed Regist,1997