@Article{573149,
     author = "Nataliia Moskalenko, Olena Vlasiuk",
     title = "Ways of improving physical activity of primary school children",
     year =  2017,
     volume =  16,
     number =  4,
     journal =  Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Kultura Fizyczna,
     pages =  s. 97-105,
    }