@Article{533835,
     author = "Tadeusz Ambroży, Amadeusz Kwiatkowski, Dariusz Mucha, Juliusz Piwowarski",
     title = "Changes in the physical endurance of kickboxers in the preparatory phase",
     year =  2016,
     volume =  ,
     number =  2 (18),
     journal =  Security Dimensions. International & National Studies,
     pages =  s. 80-91,
    }