Ptak-Chmielewska, Aneta. “Bankruptcy Risk Models for Polish SMEs – Regional Approach”. Acta Universitatis Lodziensis. Folia Oeconomica 1, no. 333 (February 27, 2018): [71]-83. Accessed February 7, 2026. https://www.czasopisma.uni.lodz.pl/foe/article/view/955.