@article{zu236066,
           title = {Effect of swimming with the use of aqua fitness elements and interval hypoxic training on the physical fitness of boys aged 11-12 years},
          author = {???? ?????? and ???????? ????????? and ???????? ?????????? and ???? ?????? and ?????????? ????????? and ???????? ????????? and ???????? ?????????},
            year = {2018},
         journal = {Pedagogy of Physical Culture and Sports},
             url = {http://eprints.zu.edu.ua/36066/}
}