@Article{ authors = " Krzysztof Żołnowski, Krzysztof Prusik, Katarzyna Prusik, Walery Zukow", title = "Impact of the pellets on the physical development and motor efficiency 12-year olds", journal = "Journal of Education, Health and Sport", issue = "2013 / Tom 3 / Numer 1", pages = "121 - 148" }

@Article{ authors = " Barbara Dix, Krzysztof Prusik, Krzysztof Żołnowski, Dorota Mościńska, Walery Zukow", title = "Sylwetka instruktora rekreacji ruchowej ", journal = "Journal of Education, Health and Sport", issue = "2013 / Tom 3 / Numer 11", pages = "111 - 122" }