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Within-school social comparison: How students perceive the ..:

Trautwein, Ulrich ; Lüdtke, Oliver ; Nagy, Gabriel.
Journal of educational psychology.  101 (2009)  4 - p. 853-866 , 2009
Exemplar:  Zentrale:E03 z psy 860 j/35; Zentrale:Magazin Zs fc 3935