Key points are not available for this paper at this time.
Oliver D. Anderson, Journal of the Royal Statistical Society. Series D (The Statistician), Vol. 27, No. 3/4, Partial Proceedings of the 1978 I.O.S. Annual Conference on Time Series Analysis (and Forecasting) (Sep. - Dec., 1978), p. 265
Anderson et al. (Fri,) studied this question.