Salem, Maha, Stefan Kopp, Ipke Wachsmuth, Katharina Rohlfing, and Frank Joublin. “Generation and Evaluation of Communicative Robot Gesture.”https://doi.org/10.1007/s12369-011-0124-9__International Journal of Social Robotics, Special Issue on Expectations, Intentions, and Actions 4, no. 2 (2012): 201–17.https://doi.org/10.1007/s12369-011-0124-9 .

Salem, Maha, Stefan Kopp, Ipke Wachsmuth, Katharina Rohlfing, and Frank Joublin. “Generation and Evaluation of Communicative Robot Gesture.”https://doi.org/10.1007/s12369-011-0124-9__International Journal of Social Robotics, Special Issue on Expectations, Intentions, and Actions 4, no. 2 (2012): 201–17.https://doi.org/10.1007/s12369-011-0124-9 .

Lohan, Katrin Solveig, Katharina Rohlfing, Karola Pitsch, Joe Saunders, Hagen Lehmann, Chrystopher L. Nehaniv, Kerstin Fischer, and Britta Wrede. “Tutor Spotter: Proposing a Feature Set and Evaluating It in a Robotic System.”https://doi.org/10.1007/s12369-011-0125-8__International Journal of Social Robotics 4, no. 2 (2012): 131–46.https://doi.org/10.1007/s12369-011-0125-8 .