HORNIAKOVÁ, Veronika. How Could Help International Certifications for IT Subject Matter Teachers. In TIEES 2023: Trends and Innovations in E-business, Education and Security. International Scientific Web Conference of Scientists and Doctoral Students or Candidates. TIEES 2023: Trends and Innovations in E-Business, Education and Security : Eleventh International Scientific Web-conference of Scientists and PhD Students or Candidates. - Bratislava : The Slovak Society for Economic Informatics, 2023. ISSN 2729-8493, pp. 53-65.