References
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- Chow , Y.S , Robbins , H and Stegmund , D . 1971 . Great Expectations: The Theory of Optimal Stopping , Boston : Houghton Miffin .
- Gilbert , J and Mosteluer , F . 1966 . Recognizing the maximum of a sequence . JASA , 61 : 35 – 73 .
- Shiryaev , A . 1976 . Statistical Scquential Analysis , Moscov : Nauka . in Russian