This article is within the scope of WikiProject Economics, a collaborative effort to improve the coverage of Economics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EconomicsWikipedia:WikiProject EconomicsTemplate:WikiProject EconomicsEconomics
First of all, I dared to upgrade this articles importance. This is one of the most widely recognized economic models, it deserves more than mid!
Second, whoever wrote it, thanks for the equations, but please include a legend telling which variable means what. Every textbook uses different letters, so it's not universally understandable.
Third, source the equations.