alternative_identification.m ---> Based on the sing set of Kilian & Daniel (2012), the code compares the SVAR results from a Cholesky Decomposition Identification vs a Sign-Restriction
Lutz Kilian & Daniel P. Murphy, 2012. "Why Agnostic Sign Restrictions Are Not Enough: Understanding The Dynamics Of Oil Market Var Models," Journal of the European Economic Association, vol. 10(5), pages 1166-1188, October.
External_instrument_identification.m ---> Following Kanzig (2019) and based on the code by Montiel Olea, Stock and Watson (2020), this estimate a Proxy-SVAR (i.e. identification with external instruments and high frecuency identification) and compares the results with different sets of instruments.
“Inference in Structural Vector Autoregressions Identified With and External Instrument”, Montiel Olea, José L; Stock, James H.; and Watson, Mark W; Working Paper Columbia University. ( https://github.com/jm4474/SVARIV )
Diego Känzig, 2019. The macroeconomic effects of oil supply news: Evidence from OPEC announcements.