@article{Didelez2007,
author = {Didelez, V.},
title= {Graphical models for composable finite Markov processes.},
year = {2007},
doi = {10.1111/j.1467-9469.2006.00528.x},
journal = {Scandinavian Journal of Statistics},
volume = {34},
number = {1},
pages = {169--185},
}