Maziarz, B., D. Chojęta, E. Zygmunt, H. Wróblewski, and A. Zimna. “Influence of Vegan Diet on Physical Performance of Athletes”. Journal of Education, Health and Sport, vol. 10, no. 7, July 2020, pp. 209-15, doi:10.12775/JEHS.2020.10.07.023.