TY - JOUR A1 - Scheike, T.H. T1 - The additive nonparametric and semiparametric Aalen model as the rate function for a counting process Y1 - 2002 DO - 10.1023/A:1015849821021 JF - Lifetime Data Analysis VL - 8 IS - 3 SP - 247 EP - -262 ER -