Kowerski M. The Economic Sentiment Index as a Tool of Estimation of the Growth Rate of GDP in Regions. An Example of the Lubelskie Voivodship. br [Internet]. 2013 May 9 [cited 2024 Nov. 22];11(1):57-63. Available from: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/1138