Kowerski, M., J. Bielak, D. Długosz, and M. Poninkiewicz. “Economic Sentiment Changes in the Lubelskie Voivodship in the 4th Quarter of 2011”. Regional Barometer. Analyses & Prognoses, no. 1 (27), May 2012, pp. 61-75, doi:10.56583/br.1269.