Alexander Torgovitsky, The University of Chicago
Based on two papers with Mogstad and Walters:
<a href="https://a-torgovitsky.github.io/monotonicity.pdf">"The Causal Interpretation of Two-Stage Least Squares with Multiple Instrumental Variables"</a> and <a href="https://a-torgovitsky.github.io/multipleivmte.pdf">"Policy Evaluation with Multiple Instrumental Variables"</a>