Add gradual_liberalization_network lecture and extend organizational_equilibrium

lectures/_static/quant-econ.bib

@@ -3872,3 +3872,32 @@ @article{ThomasWorrall1994
   pages = {81--108},
   year = {1994}
 }
+
+@article{Armington1969,
+  author = {Armington, Paul S.},
+  title = {A Theory of Demand for Products Distinguished by Place of Production},
+  journal = {IMF Staff Papers},
+  volume = {16},
+  number = {1},
+  pages = {159--178},
+  year = {1969}
+}
+
+@article{HuoLevchenkoPandalaiNayar2025,
+  author = {Huo, Zhen and Levchenko, Andrei A. and Pandalai-Nayar, Nitya},
+  title = {International Comovement in the Global Production Network},
+  journal = {Review of Economic Studies},
+  volume = {92},
+  number = {1},
+  pages = {365--403},
+  year = {2025}
+}
+
+@article{BonadioEtAl2026,
+  author = {Bonadio, Barth{\'e}l{\'e}my and Huo, Zhen and Kang, Elliot and Levchenko, Andrei A. and Pandalai-Nayar, Nitya and Toma, Hiroshi and Topalova, Petia},
+  title = {Playing with Blocs: Quantifying Decoupling},
+  journal = {Journal of International Economics},
+  volume = {163},
+  pages = {104204},
+  year = {2026}
+}

lectures/_toc.yml

@@ -96,6 +96,7 @@ parts:
   - file: dovis_accounting_mf
   - file: gradual_trade_agreements
   - file: organizational_equilibrium
+  - file: gradual_liberalization_network
 - caption: Other
   numbered: true
   chapters: