Springer Education, 08 Feb 2016 Which Peers Matter: How Social Ties Affect Peer-group Effects http://link.springer.com/article/10.1007/s11162-015-9391-x
Springer Education, 30 Oct 2015 Which Peers Matter: How Social Ties Affect Peer-group Effects http://link.springer.com/article/10.1007/s11162-015-9391-x