![](https://kellogg.nd.edu/sites/default/files/styles/kellogg_news_header/public/old_files/imce/altman_0.jpg?itok=XoyIiANa)
Congratulations to former Visiting Fellow and Doctoral Student David Altman, who has co-authored, along with Federico Rojas-de-Galarreta and Francisco Urdinez, a new working paper in the Varieties of Democracy Institute series, entitled "An Interactive Model of the Democratic Peace: Revisiting the Theory with Elastic Measures" (No. 61, January 2018).