Robust finger gesture recognition on handheld devices for spatial programming of industrial robots. - Jens Lambrecht; Hendrik Walzel; Jörg Krüger (RO-MAN, 2013)

AutomationML Mechatronic Models as Enabler of Automation Systems Engineering: Use-case and Evaluation. - Milan Vathoopan; Hendrik Walzel; Waldemar Eisenmenger; Alois Zoitl; Benjamin Brandenbourger (ETFA, 2018)

An Approach for an Automated Adaption of KPI Ontologies by Reusing Systems Engineering Data. - Hendrik Walzel; Milan Vathoopan; Alois Zoitl; Alois C. Knoll (ETFA, 2019)