get bibtex references working

Author: drbenvincent

docs/source/_static/interrogate_badge.svg

@@ -11,7 +11,7 @@
     "This example is in-progress! Further elaboration and explanation will follow soon.\n",
     ":::\n",
     "\n",
-    "This notebook analyses historic data on banking closures from {cite:t}`richardson2009monetary` and used as a case study for a difference in differences analysis in the excellent book [Mastering Metrics](http://www.masteringmetrics.com) {cite:p}`angrist2014mastering`. Here, we replicate this analysis, but using Bayesian inference."
+    "This notebook analyses historic data on banking closures from [Richardson & Troost (2009)](http://masteringmetrics.com/wp-content/uploads/2015/02/Richardson_Troost_2009_JPE.pdf) and used as a case study for a difference in differences analysis in the [Mastering Metrics](http://www.masteringmetrics.com) book. Here, we replicate this analysis, but using Bayesian inference."
    ]
   },
   {

docs/source/notebooks/did_pymc_banks.ipynb

@@ -47,3 +47,16 @@ @book{hansenEconometrics
   year={2022},
   publisher={Princeton}
 }
+@online{brexit2022policybrief,
+year={2022},
+title={What can we know about the cost of Brexit so far?},
+url={https://www.cer.eu/publications/archive/policy-brief/2022/cost-brexit-so-far},
+author={Springford, John}
+}
+
+@book{reichardt2019quasi,
+  title={Quasi-experimentation: A guide to design and analysis},
+  author={Reichardt, Charles S},
+  year={2019},
+  publisher={Guilford Publications}
+}