Kotlewski, Dariusz Cezary, and Mirosław Błażej. “Implementation of KLEMS Economic Productivity Accounts in Poland”. Acta Universitatis Lodziensis. Folia Oeconomica 2, no. 334 (February 28, 2018): [7]-18. Accessed March 13, 2025. https://czasopisma.uni.lodz.pl/foe/article/view/796.