@misc{Konarski_Jan_Characteristics,
 author={Konarski, Jan and Strzelczyk, Ryszard},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Characteristics of differences in energy expenditure and heart rate during indoor and outdoor field hockey matches},
 keywords={field hockey, indoor hockey, heart rate, energy expenditure, polar team system, competitive loads},
}