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Houston, Diane and Andreopoulou, A. (2003) Tests of both corollaries of social identity theory's self-esteem hypothesis in a real group setting. British Journal of Social Psychology 42 (3), pp. 357-370. ISSN 0144-6665.
Andreopoulou, A. and Houston, Diane M. (2002) The impact of collective self-esteem on intergroup evaluation: self-protection and self-enhancement. Current Research in Social Psychology 7 (14), pp. 243-256. ISSN 1088-7423.