Master of Science
Wallace J. Richardson
Reserve or safety stock is a cushion against the errors in a forecast of demand over lead time and can be optimally set if measured by the standard deviation of the forecast error over the lead time plus review time period.
Nyquist, Daren A., "An investigation of the statistical characteristics of the measuring factor for the time variation of forecast error over lead time" (1971). Theses and Dissertations. 3977.