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nih.gov
pubmed.ncbi.nlm.nih.gov
Parrott, W. G.; Smith, R. H. (1993), “Distinguishing the experiences of envy and jealousy”, Journal of Personality and Social Psychology64: 906--920, doi:10.1037/0022-3514.64.6.906, PMID8326472
ncbi.nlm.nih.gov
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