TY  - JOUR
A1  - Nielsen, G.G.
A1  - Gill, R.D.
A1  - Andersen, P.K.
A1  - Sørensen, T.A.I.
T1  - A counting process approach to maximum likelihood estimation in frailty models
Y1  - 1992
JF  - Scandinavian Journal of Statistics
VL  - 19
SP  - 25
EP  - -43

ER  -