Casas, Andreu <br/><br/>
Who Leads? Who Follows?  Measuring Issue Attention and Agenda Setting by Legislators and the Mass Public Using Social Media Data / 
Andreu Casas; Jonathan Nagler; Patrick J. Egan; Richard Bonneau; John T. Jost; Joshua A. Tucker. 
 - Washington:  Cambridge University Press,  Nov 2019. 
 - 113:4; 883-901. 
<br/><br/><label>LC Class. No.: </label>APSR  / 113:4 2019