@misc{Kaczmarek_Łukasz_Adaptation_2010,
 author={Kaczmarek, Łukasz and Stanko-Kaczmarek, Maja and Dombrowski, Stephan},
 number={No 3},
 howpublished={online},
 year={2010},
 publisher={Committee for Psychological Science PAS},
 title={Adaptation and Validation of the Steen Happiness Index into Polish},
 doi={10.2478/v10059-010-0013-3},
}