@ARTICLE{Czerw_Agnieszka_Many_2015,
 author={Czerw, Agnieszka},
 number={No 2},
 journal={Polish Psychological Bulletin},
 howpublished={online},
 year={2015},
 publisher={Committee for Psychological Science PAS},
 title={Many faces of optimism. Proposal of five profiles of optimistic attitudes in research on Polish sample.},
 URL={http://journals.pan.pl/Content/99870/PDF/11.pdf},
 doi={10.1515/ppb-2015-0032},
}