Forecasting: An Appraisal for Policy Makers and Plannersby William Ascher;Practical Experiences with Modelling and Forecasting Time Seriesby Gwilym M. Jenkins;Sales Forecastingby D. L. Harwood; E. S. Grossman; E. L. Bailey;Sales Forecasting Methods: A Survey of Recent Developmentsby Vithala Rao; James Cox,;Time Series and Forecasting: An Applied Approachby Bruce Bowerman; Richard O'Connell;Forecasting: Methods and Applicationsby Spyros Makridakis; Steven Wheelwright