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TESTING WHETHER ONE RISK PROGRESSES FASTER THAN THE OTHER IN A COMPETING RISKS PROBLEM
Dykstra, Richard, (1996)
Change point tests based on U-statistics with applications in reliability
Aly, Emad-Eldin, (1997)
Stochastic Orders by M. Shaked and J. G. Shantikumar
Kochar, Subhash, (2007)