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Common knowledge of a multivariate aggregate statistic
Nielsen, Lars Tyge, (1990)
Nielsen, Lars Tyge, (1995)
Annual default rates are probably less than long-run average annual default rates
Kiefer, Nicholas M., (2008)
Default estimation for low-default portfolios
Kiefer, Nicholas M., (2009)
Default estimation and expert information
Kiefer, Nicholas M., (2010)