Kowal-Pawul, Anna. “Structured E-Invoices As a Manifestation of the Digitization of the Tax on Goods and Services in Poland – Selected Aspects”. Studia Prawno-Ekonomiczne 129 (December 20, 2023): 101–118. Accessed April 13, 2025. https://ojsltn.uni.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/2270.