PUJSZO, Małgorzata, PUJSZO, Ryszard, STĘPNIAK, Robert and ADAM, Marek. The course of the backward attacks in judo, after the first change of the rules, based on The World Championship from 2009 and 2011 in over 100 kg category. A pilot study. Journal of Education, Health and Sport. Online. 11 June 2016. Vol. 6, no. 6, pp. 223-234. [Accessed 6 December 2023].