Aly, Emad-Eldin A AKochar, Subhash CMcKeague, I2012-06-132012-06-131994Journal of american statistical association,V89,P994-999http://hdl.handle.net/10263/4340enCompeting risksCounting processDistribution free testsRight censored dataSome tests for comparing cumulative incidence functions and cause specific hazard ratesArticle