Corresponding author: P. S. H. Leeflang © P. S. H. Leeflang. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits to copy and distribute the article for non-commercial purposes, provided that the article is not altered or modified and the original author and source are credited.
Citation:
Leeflang PSH (1982) Planning: en forecasting in marketing. Maandblad Voor Accountancy en Bedrijfseconomie 56(6/7): 289-307. https://doi.org/10.5117/mab.56.19759 |