Lehmann, Sibylle Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://www.springerlink.com/content/26612h6r67837351/ (Any fulltext)
Lehmann, S. (2010). Chaotic Shop-Talk or Efficient Parliament? The Reichstag, the Parties, and the Problem of Governmental Instability in the Weimar Republic. Public Choice, 144, 88-104.