1. Infant Crying and Maternal Responsiveness
2. and (1983). The structure of infant behavior: an analysis of sleep and waking in the first months of life. In and (eds.), Review of Child Development Research, Vol. 6 New York: Academic Press, Pp. 73-100.
3. Temporal Characteristics in Infant Cry and Non-Cry Vocalizations
4. and (1981). Some emerging models of emotion in human infancy. In and (eds.), Behavioral Development. Cambridge: Cambridge Univ. Press. Pp. 568-588.