1. Ball, P.; Gaskill, H.S., and Lopez, R.J. (1981). Iceberg motion: An analysis of two data sets collected at drill sites in the Labrador Sea. Technical Report No. 81–2, Centre for Cold Ocean Resources Engineering, Memorial University, St. John’s, Newfoundland.
2. Bartlett, M.S. (1938). Further aspects of the theory of multiple regression. Proc. Cambridge Philos. Soc., 34, 33–40.
3. Box, G.E.P., and Jenkins, G.M. (1970). Time Series Analysis—Forecasting and Control. Holden-Day, San Francisco.
4. Box, G.E.P., and Jenkins, G.M. (1976). Time Series Analysis: Forecasting and Control. Revised Edition. Holden-Day, San Francisco.
5. Craven, P., and Wahba, G. (1979). Smoothing noisy data with spline functions. Numer. Math., 31, 377–403.