MROZKOWIAK, Mirosław. Sexual dimorphism of the frequency of significant correlations between the characteristics of body trunk and feet in children aged 4 to 6 years. Pedagogy and Psychology of Sport. Online. 28 February 2021. Vol. 7, no. 1, pp. 147-159. [Accessed 14 May 2025]. DOI 10.12775/PPS.2021.07.01.010.