TY  - RPRT
TI  - Early stopping in the two-sample problem for bounded random variables.
AU  - D L DeMets
AU  - M Halperin
PY  - 1982
DO  - 10.1016/0197-2456(82)90015-0
UR  - https://pubmed.ncbi.nlm.nih.gov/7067469/
ID  - 7067469
ER  -