Barnová, S., Geršicová, Z., Krásna, S., & Gabrhelová, G. (2023). Development of In-Service and Pre-Service Vocational School Teachers’ Key Competencies in Accordance with the Digital and the Green Transformation of the Economy. R&E-SOURCE, (s1), 30–37. https://doi.org/10.53349/resource.2023.is1.a1188