@ARTICLE{Kaczmarek_Łukasz_D._Validation_2012, author={Kaczmarek, Łukasz D. and Haładziński, Piotr and Kaczmarek, Lech and Bączkowski, Błażej and Ziarko, Michał and Dombrowski, Stephan U.}, number={No 3}, journal={Polish Psychological Bulletin}, howpublished={online}, year={2012}, publisher={Committee for Psychological Science PAS}, title={Validation of the voluntary participation in online surveys scale}, URL={http://journals.pan.pl/Content/99713/PDF/07.pdf}, doi={10.2478/v10059-012-0023-4}, }