Add unemployment dynamics lectures (linear + nonlinear)

lectures/_static/quant-econ.bib

@@ -4073,3 +4073,54 @@ @book{Nummelin_1984
   year      = {1984},
   doi       = {10.1017/CBO9780511526237}
 }
+
+@article{friedman1968role,
+  author    = {Friedman, Milton},
+  title     = {The Role of Monetary Policy},
+  journal   = {American Economic Review},
+  volume    = {58},
+  number    = {1},
+  pages     = {1--17},
+  year      = {1968}
+}
+
+@article{nelson_plosser1982,
+  author    = {Nelson, Charles R. and Plosser, Charles I.},
+  title     = {Trends and Random Walks in Macroeconomic Time Series:
+               Some Evidence and Implications},
+  journal   = {Journal of Monetary Economics},
+  volume    = {10},
+  number    = {2},
+  pages     = {139--162},
+  year      = {1982}
+}
+
+@incollection{blanchard_summers1986,
+  author    = {Blanchard, Olivier J. and Summers, Lawrence H.},
+  title     = {Hysteresis and the {European} Unemployment Problem},
+  booktitle = {NBER Macroeconomics Annual 1986, Volume 1},
+  editor    = {Fischer, Stanley},
+  publisher = {MIT Press},
+  pages     = {15--78},
+  year      = {1986}
+}
+
+@article{roed1997hysteresis,
+  author    = {Røed, Knut},
+  title     = {Hysteresis in Unemployment},
+  journal   = {Journal of Economic Surveys},
+  volume    = {11},
+  number    = {4},
+  pages     = {389--418},
+  year      = {1997}
+}
+
+@article{kapetanios_shin_snell2003,
+  author    = {Kapetanios, George and Shin, Yongcheol and Snell, Andy},
+  title     = {Testing for a Unit Root in the Nonlinear {STAR} Framework},
+  journal   = {Journal of Econometrics},
+  volume    = {112},
+  number    = {2},
+  pages     = {359--379},
+  year      = {2003}
+}

lectures/_toc.yml

@@ -154,6 +154,8 @@ parts:
   - file: pandas_panel
   - file: ols
   - file: mle
+  - file: unemployment_linear
+  - file: unemployment_nonlinear
 - caption: Auctions
   numbered: true 
   chapters: