Mindful tutors: Linguistic choice and action demonstration in speech to infants and a simulated robot
K. Fischer, K. Foth, K. Rohlfing, B. Wrede, Interaction Studies 12 (2011) 134–161.

Children's lexical skills and task demands affect gestural behavior in mothers of late-talking children and children with typical language development
A. Grimminger, K. Rohlfing, P. Stenneken, Gesture 10 (2010) 251–278.

People modify their tutoring behavior in robot-directed interaction for action learning
A.-L. Vollmer, K.S. Lohan, K. Fischer, Y. Nagai, K. Pitsch, J. Fritsch, K. Rohlfing, B. Wrede, in: Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning, IEEE, 2009, pp. 1–6.

How can multimodal cues from child-directed interaction reduce learning complexity in robots?
K. Rohlfing, J. Fritsch, B. Wrede, T. Jungmann, Advanced Robotics 20 (2006) 1183–1199.