Exact Inference for Adaptive Group Sequential Designs

Author: 
Gao, P.
 
L.
C.R.

Statistics in Medicine, volume 32, 3991-4005. 
Gao, P., Liu, L., and Mehta, C.R.

http://www.cytel.co/hs-fs/hub/1670/file-2600444361-pdf/lib/pubs/exact-inference-for-adaptive-group-sequential-designs-2002-09-stats-in-med-mehta.pdf?t=1504192418453&__hstc=114829016.55437cd51bee0021c2c82ae4c0727049.1502652737410.1502652737410.1504290046939.2&__hssc=114829016.2.1504290046939&__hsfp=570863366
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