TY  - JOUR
A1  - Allignol, A.
A1  - Schumacher, M.
A1  - Beyersmann, J.
T1  - Empirical transition matrix of multi-state models: The etm package
Y1  - 2011
UR  - http://www.jstatsoft.org/v38/i04/
JF  - Journal of Statistical Software
VL  - 38
IS  - 4
SP  - 1
EP  - -15

ER  -