Tylec, Agnieszka, and Ewelina Zalejska. “Profitability of Selected Hospitality Businesses in the COVID-19 Pandemic and Post-Pandemic Years”. Studia Prawno-Ekonomiczne 135 (September 3, 2025): 135–165. Accessed December 10, 2025. https://www.czasopisma.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/2859.