https://web.ub.edu/ca/web/departament-historia-economica/w/seminari-iperg-%7C-turning-away-from-the-state-trade-shocks-and-informal-insurance-in-brazil
Seminari IPERG | Turning Away from the State: Trade Shocks and Informal Insurance in Brazil -...
https://www.fit.fraunhofer.de/en/business-areas/cooperation-systems/projects/iperg.html
IPerG - Fraunhofer FIT
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