Ingroup friendship and political mobilization among the disadvantaged
Cultural Diversity & Ethnic Minority Psychology (2015) - Comment
pubmed: 25313430  doi: 10.1037/a0038007  issn: 1099-9809  issn: 1939-0106 

Nikhil K. Sengupta, Petar Milojev, Fiona K. Barlow, Chris G. Sibley