Zajác, P., J. Čurlej, L. Benešová, and J. Čapla. “Hygiene Measures in Supermarkets, Retail Food Stores, and Grocery Shops During the COVID-19 Pandemic in Slovakia”. Potravinarstvo Slovak Journal of Food Sciences, vol. 15, May 2021, pp. 396-22, doi:10.5219/1592.