GYIMESI, Áron 2021. NATIONAL INDUSTRY 4.0 PLATFORMS IN THE VISEGRAD 4 COUNTRIES – A COMPARISON WITH THE FRONTRUNNER DIGITAL ECONOMIES IN EUROPE. Studia Universitatis Babeș-Bolyai Oeconomica. 66, 3 (Dec. 2021), 21–39. DOI:https://doi.org/10.2478/subboec-2021-0012.