@misc{Ulmer_Hans-Voekhart_Circulatory,
 author={Ulmer, Hans-Voekhart},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Circulatory system - mortality in relation to preventive physical activities},
}