TY  - RPRT
TI  - Assessing gamma frailty models for clustered failure time data.
AU  - J H Shih
AU  - T A Louis
PY  - 1995
DO  - 10.1007/bf00985771
UR  - https://pubmed.ncbi.nlm.nih.gov/9385102/
ID  - 9385102
ER  -