1. Acheson KJ, Zahorska-Markiewicz B, Pittet P, Anantharaman K, Jequier E (1980). Caffeine and coffee: their influence on metabolic rate and substrate utilization in normal weight and obese individuals. Am J Clin Nutr 33, 989–997.
2. Arciero PJ, Gardner AW, Benowitz NL, Poehlman ET (1998). Relationship of blood pressure, heart rate and behavioral mood state to norepinephrine kinetics in younger and older men following caffeine ingestion. Eur J Clin Nutr 52, 805–812.
3. Arciero PJ, Gardner AW, Calles-Escandon J, Benowitz NL, Poehlman ET (1995). Effects of caffeine ingestion on NE kinetics, fat oxidation, and energy expenditure in younger and older men. Am J Physiol 268, E1192–E1198.
4. Astrup A, Toubro S (1993). Thermogenic, metabolic, and cardiovascular responses to ephedrine and caffeine in man. Int J Obes Relat Metab Disord 17 (Suppl 1), S41–S43.
5. Astrup A, Breum L, Toubro S, Hein P, Quaade F (1992). The effect and safety of an ephedrine/caffeine compound compared to ephedrine, caffeine and placebo in obese subjects on an energy restricted diet. A double blind trial. Int J Obes Relat Metab Disord 16, 269–277.