Because of the growing costs, distribution, policy and distribution research become more and more important to marketing for publishers. It is, therefore, necessary to improve the economic base of distribution of press products. To solve the comprehensive set of problems, a comprehensive marketing- sub-model had to be developed. This computer model - called MOSA - is reported here. It refers to a model for optimisation of the structure of distribution points The "prospects" section at the end of the paper shows the openness of the model, this is particularly true with regard to future developments in the direction of an information system for distribution. The purpose of the report is to present an application example for integrated distribution policy and distribution research.