| ADF | Estimate the ADF statistic | 
| ADFres | Estimate the ADF model under the null | 
| cvPSYmc | Simulate the finite sample critical values for the PSY test. | 
| cvPSYwmboot | Conduct the new composite bootstrapping for the PSY test. | 
| disp | Generate a table with identified bubble/crisis periods | 
| locate | Locate bubble/crisis periods | 
| pipe | Pipe operator | 
| PSY | Estimate PSY's BSADF sequence of test statistics | 
| psymonitor-package | psymonitor: Real Time Monitoring of Asset Markets: Bubbles... | 
| snp | S&P 500 price to dividend ratio | 
| spread | Credit risk in the European sovereign sector | 
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