中国科学院数学与系统科学研究院期刊网
An Efficient Risk Estimator with External Information Under Additive Hazards Model
Xin WANG, Xiao-ming XUE, Jie ZHOU, Liu-quan SUN
Acta Mathematicae Applicatae Sinica(English Series) . 2018, (1): 35 -50 .  DOI: 10.1007/s10255-018-0726-1