Stocks have different purposes depending on the problems they intend to alleviate. Discuss different types of "stocks philosophies" for articles / materials and what their function is (ie what type of problem they intend to solve / mitigate). One of these ("Cycle Stock", which is controlled by cost motives) can be dimensioned via different types of batch formation models. One of these models is often called EOQ (economic order quantity or the Wilson formula). In your awnser also include these 1) Describe Wilson's formula 2) Also show how to justify a reduction in capital tied up for this type of stock using the Wilson formula (maximum 1 a4 page)