Kociuba , M.; Ignasiak, Z.; Rokita, A.; Cichy, I.; Dudkowski, A.; Ściślak, M.; Kochan, K.; Sebastjan, A.; Spinek, A.; Lorek, D.; Bogin, B.; Chakraborty, R.; Kozieł, S. Level of Oxytocin Prior to Rugby and Handball Matches: An Exploratory Study Among Groups of Polish Players. AR 2023, 85, 83-94.