TY  - RPRT
TI  - On group sequential procedures under variance heterogeneity.
AU  - A Hussein
AU  - K C Carriere
PY  - 2005
DO  - 10.1191/0962280205sm0391oa
UR  - https://pubmed.ncbi.nlm.nih.gov/15807147/
ID  - 15807147
ER  -