Khcharem, Amir, et al. “Effects of Repeated Low-Dose Caffeine Ingestion During a Night of Total Sleep Deprivation on Physical Performance and Psychological State in Young Recreational Runners”. International Journal of Sport Studies for Health, vol. 4, no. 1, Mar. 2022, pp. 39-42, https://doi.org/10.61838/kman.intjssh.4.1.8.