1. Affective Reciprocity and the Development of Autonomy: The Study of a Blind Infant
2. M. Brambring, G. Dobslaw, K. Klee, S. Obermann, and H. Troster (1987 ) Der Bielefelder Entwicklungstest fur blinde Klein- und Vorschulkinder [The Bielefeld Developmental Test for Blind Infants and Preschoolers] . Unpublished research report. Special Research Unit on Prevention and Intervention in Childhood and Adolescence, University of Bielefeld.
3. M. Brambring, A. Beelmann, G. Dobslaw, M. Hauptmeier, W. Hecker, and S. Obermann (1991 ) Bielefeld Project: early intervention and family counseling of blind infants and preschoolers - a longitudinal study . Unpublished manuscript. Special Research Unit on Prevention and Intervention in Childhood and Adolescence, University of Bielefeld.