Java in Industrial Automation - A Virtual PLC. - Mario Grabner; Gerhard Leonhartsberger; Alexander Leutgeb; Josef Altmann (COMPSAC, 2001)

Considerations and Requirements for Tools Supporting Mobile Teams. - Mario Pichler; Thomas Hofer; Gerhard Leonhartsberger (ICDCS Workshops, 2002)

Context-Awareness on Mobile Devices - the Hydrogen Approach. - Thomas Hofer; Wieland Schwinger; Mario Pichler; Gerhard Leonhartsberger; Josef Altmann; Werner Retschitzegger (HICSS, 2003)