Developing feedback: How children of different age contribute to a tutoring interaction with adults
A.-L. Vollmer, K. Pitsch, K.S. Lohan, J. Fritsch, K. Rohlfing, B. Wrede, in: Development and Learning (ICDL), 2010 IEEE 9th International Conference on Development and Learning, 2010, pp. 76–81.

Development of a biomedical tissue differentiation system using piezoelectric actuators
D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.