, 2013, Attachment, interaction, and synchronization: how innate mechanisms in attachment give rise to emergent structure in networks and communities, in D. D. Franks & J. H. Turner (eds.), Handbook of neurosociology, Dordrecht, Springer, pp. 243-254.
, 1938, 'Migration and economic opportunity', Zeitschrift für Sozialforschung 7 (1-2), 316-317.
with Rumney, J. , 1938a, 'Population movements', Zeitschrift für Sozialforschung 7 (1-2), 317-318.