Miguel Gutierrez-Guerrero J, Antonio Holgado-Terriza J. iMMAS an Industrial Meta-Model for Automation System Using OPC UA. ELEKTRON ELEKTROTECH [Internet]. 2017 Jun. 8 [cited 2026 Jan. 22];23(3):3-11. Available from: https://eejournal.ktu.lt/index.php/elt/article/view/18324