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Uncertainty, flexibility, and the investment decision : the case of an undeveloped oil field ; SAF-project no. 310.1: planlegging under usikre oljepriser
Bjerksund, Petter, (1988)
An arbitrary benchmark CAPM : one additional frontier portfolio is sufficient
Ekern, Steinar, (2008)
Adaptive exponential smoothing revisited
Ekern, Steinar, (1980)