GraphQL Interface for OPC UA. - Jani Hietala; Riku Ala-Laurinaho; Juuso Autiosalo; Heikki Laaki (ICPS, 2020)

IoT Architecture and Solutions for Predictive Maintenance of Mobile Machinery. - Jani Hietala; Kalle Raunio; Tero Jokinen; Petri Kaarmila (IECON, 2022)

Comparison of REST and GraphQL Interfaces for OPC UA. - Riku Ala-Laurinaho; Joel Mattila; Juuso Autiosalo; Jani Hietala; Heikki Laaki; Kari Tammi (Comput., 2022)