1. Brown, R. G. (1959). Statistical forecasting for inventory control. New York: McGraw-Hill.
2. Foster, E. (1963). Sales forecasts and the inventory cycle. Econometrica, 31(3), 400–421.
3. Hawkins, D., & Simon, H. (1949). Note: Some conditions of macro economic stability. Econometrica, 17(3-4), 245–248.
4. Hines, W. G. S. (2004). Geometric moving average. In Encyclopedia of statistical sciences (Vol. 4, 2nd ed., pp. 2784–2788). New York: Wiley-Interscience.
5. Keynes, J. M. (1936). The general theory of employment, interest and money. London: Macmillan.