Enhancing Authorization Mechanisms using Attribute Certificates for OPC UA based Applications Karthikeyan, Gajasri Heiss, Stefan 2019 info:eu-repo/semantics/conferenceObject doc-type:conferenceObject text http://purl.org/coar/resource_type/c_5794 https://www.th-owl.de/elsa/record/5588 Karthikeyan G, Heiss S. Enhancing Authorization Mechanisms using Attribute Certificates for OPC UA based Applications. In: <i>2019 IEEE 17th International Conference on Industrial Informatics (INDIN)</i>. ; 2019. doi:<a href="https://doi.org/10.1109/indin41052.2019.8972148">10.1109/indin41052.2019.8972148</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1109/indin41052.2019.8972148 info:eu-repo/semantics/altIdentifier/isbn/9781728129273 info:eu-repo/semantics/closedAccess