Póka, Viktor, and Balázs Gyenge. 2022. “Regional Impact During Covid Times on E-Grocery Industry. Investigation of Results Miskolc and Zalaegerszeg and Their Agglomeration”. Studia Mundi – Economica 9 (3): 30-42. https://doi.org/10.18531/Studia.Mundi.2022.09.03.30-42.