Cognition, Vol. 31, No. 1. (February 1989), pp. 1-44.
Behavioural Processes, Vol. 68, No. 3. (31 March 2005), pp. 283-287.
Learn. Mem., Vol. 7, No. 6. (1 November 2000), pp. 400-412.
Proceedings of the National Academy of Sciences of the United States of America, Vol. 95, No. 13. (23 June 1998), pp. 7778-7783.
Endocrine reviews, Vol. 17, No. 1. (February 1996), pp. 64-102.
Brain Research Bulletin, Vol. 54, No. 4. (1 March 2001), pp. 329-338.
Brain, Behavior, and Immunity, Vol. 12, No. 4. (December 1998), pp. 249-271.
Physiol. Rev., Vol. 79, No. 1. (1 January 1999), pp. 1-71.
Brief Bioinform, Vol. 2, No. 3. (1 January 2001), pp. 245-257.
Science, Vol. 180, No. 4088. (1973), pp. 871-872.
Brain, Behavior, and Immunity, Vol. In Press, Corrected Proof
Nature Immunology, Vol. 6, No. 10. (21 September 2005), pp. 973-979.
Nature, Vol. 444, No. 7117., pp. 323-329.
Brain Research, Vol. 731, No. 1-2. (26 August 1996), pp. 1-11.
J. Neurosci., Vol. 13, No. 8. (1 August 1993), pp. 3574-3581.
Glia, Vol. 40, No. 2. (2002), pp. 140-155.