TY - BOOK A1 - Andersen, P.K. A1 - Borgan, O. A1 - Gill, R.D. A1 - Keiding, N. T1 - Statistical models based on counting processes Y1 - 1993 DO - 10.1007/978-1-4612-4348-9 CY - New York PB - Springer ER -