SMOLEŃSKA, Olga Ilona; ZIĘBA, Mikołaj. Doping in amateur sport on the example of mass running events. Quality in Sport, [S. l.], v. 7, n. 1, p. 64–87, 2021. DOI: 10.12775/QS.2021.005. Disponível em: https://apcz.umk.pl/QS/article/view/QS.2021.005. Acesso em: 18 dec. 2025.