1. Box, H.O., 1969. The influence of specific group membership upon individual performance in a “Social Problem” for rats.Psychon. Sci., 14(1): 39–40.
2. ----, 1978. Social interactions in family groups of captive marmosets (Callithrix jacchus). In:The Biology and Conservation of the Callitrichidae,D. G. Kleiman (ed.), Smithsonian Institution Press, pp. 239–249.
3. Castro, R. & P. Soini, 1978. Field studies onSaguinus mystax and other Callitrichids in Amazonian Peru. In:The Biology and Conservation of the Callitrichidae,D.G. Kleiman (ed.), Smithsonian Institution Press, pp. 73–78.
4. Vogt, J. L., 1978. The social behaviour of a marmoset (Saguinus fuscicollis) group. III. Spatial analysis of social structure.Folia Primat., 29: 250–267.