@misc{Zarotis_Georgios_F._Free,
 author={Zarotis, Georgios F. and Katsagolis, Athanassios and Mitrotasios, Michalis},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Free time and its alteration tendencies},
 keywords={free time, factors affecting free time activities, free time theories},
}