update case fiscal

Author: HumphreyYang

lectures/_static/quant-econ.bib

@@ -2547,4 +2547,15 @@ @book{auerbach1987dynamic
   publisher = {Cambridge University Press},
   address = {Cambridge},
   year    = {1987}
+}
+
+@article{hall1971dynamic,
+  title={The dynamic effects of fiscal policy in an economy with foresight},
+  author={Hall, Robert E},
+  journal={The Review of Economic Studies},
+  volume={38},
+  number={2},
+  pages={229--244},
+  year={1971},
+  publisher={Wiley-Blackwell}
 }