We have noticed that in order to locate a net of dealers it is necessary to take into account the travel distances made by buyers. Travel distances and buyer habits are determined by their environment and living area. This investigation focuses on the differences between rural and urban journeys made by consumers in Andalucía in order to purchase a car in order to show that it is possible to reduce the average distance in journeys by applying location-allocation models in the geographical location of dealers. The result of this investigation shows that the application of p-median model is useful for the manufacturer executives in the automotive companies and also for the dealers, because it lets optimize the location of a commercial network.

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Analyses journal demand received by one of Spain′s two document supply centres in one year. Examines data in the following categories: most frequently requested subjects, age of documents, countries where the original journals are published, the most requested foreign and Spanish journals, and the fields of activity of the users.

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The forecasts about the behaviour of the Product Life Cycle (PLC) have been done by the Bass Model. The main contribution of this investigation is to propose the use of the assisted clients variable in the face of sales variable. Its main target is to analyze which variable is the most useful to calculate the stages of the PLC through Bass model, proposing a new way to manage marketing and sales departments in companies. In this investigation 223.557 assisted clients were analyzed nationwide by an automobile network dealer, 36.819 of them purchased cars during 24 months, which was the period of the study. In this analysis, the Bass model and non linear regression models were applied to define the stages of the product life cycle. The results show that we can get more consistent estimations of the product life cycle thanks to assisted clients’ variable. This study has theoretical and practical implications that can help enterprise management.