Zaremba, Adam, and Przemysław Konieczka. “Profitability of Investment Strategies Based on Stock Recomendations on the Polish Market”. Studia Oeconomica Posnaniensia 3, no. 2 (February 28, 2015): s. 7–28. Accessed September 3, 2026. https://journals.ue.poznan.pl/soep/article/view/3826.