Mukhopadhyay, NitisSen, Pranab KumarSinha, B K2012-10-192012-10-191986-12Sequential Analysis, V7, P1-26http://hdl.handle.net/10263/4529enDistinct unitsMinimum riskSequential estimationSimple random samplingWith replacementwithout replacementBounded risk estimation of a finite population mean : optimal strategiesArticle