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Author (up) Title Year Publication Serial Volume Pages
Clark, M.L.; Ayers, M. Friendship similarity during early adolescence: gender and racial patterns 1992 The Journal of Psychology 5628 126 393-405
Zentall, S.S.; Zentall, T.R. Activity and task performance of hyperactive children as a function of environmental stimulation 1976 Journal of consulting and clinical psychology 272 44 693-697