Morgans, R., D. Rhodes, P. Orme, E. Bezuglov, R. Di Michele, J. Teixeira, and R. Oliveira. “The Effect of Acute Caffeine Ingestion on Physical Performance in Elite European Competitive Soccer Match-Play”. Scientific Journal of Sport and Performance, vol. 2, no. 3, June 2023, pp. 402-9, doi:10.55860/BDXS3572.