Robuta

https://geopoliticalcompass.com/assumption-testing-multipolarity-is-more-dangerous-than-bipolarity-for-the-united-states/ Assumption Testing: Multipolarity is More Dangerous than Bipolarity for the United States | assumption testing https://research.bond.edu.au/en/publications/bidding-models-testing-the-stationarity-assumption/ Bidding models: Testing the stationarity assumption - Bond University Research Portal bond universitybiddingmodelstestingstationarity