TY - JOUR A1 - Andersen, P.K. A1 - Hansen, L. A1 - Keiding, N. T1 - Non-and semi-parametric estimation of transition probabilities from censored observation of a non-homogeneous markov process Y1 - 1991 JF - Scandinavian Journal of Statistics VL - 18 SP - 153 EP - -167 ER -