Zart, Sebastian, Carlo Dindorf, and Michael Fröhlich. “Ergogenic Effects of the Combination of Caffeine and New Zealand Blackcurrant Supplements on Time Trial: A Double-Blind Single-Case Experimental Study”. Scientific Journal of Sport and Performance 3, no. 2 (January 4, 2024): 145–159. Accessed July 15, 2024. https://sjsp.aearedo.es/index.php/sjsp/article/view/combined-ergogenic-effects-caffeine-new-zealand-blackcurrant.