Pawlonka, T. and Sypniewski, P. 2023. BEHAVIOURAL SEASONAL ANOMALIES ON THE STOCK EXCHANGE – VERIFICATION OF THE JANUARY EFFECT ON THE WSE IN WARSAW. The Scientific Journal European Policies, Finance and Marketing. 29(78) (Oct. 2023), 97–109. DOI:https://doi.org/10.22630/PEFIM.2023.29.78.7.