==Red links in the references== 

 At the end of the article, one has the following reference  

 * Larson, Ron, Hostetler, Robert P. and Edwards, Bruce H. (2003). Calculus of a Single Variable: Early Transcendental Functions (3rd Edition). Houghton Mifflin Company. ISBN 061822307X  textbook site online 

 Now, I have nothing against making red links which one day will become articles. However, I really doubt the links above will ever be filled, and if yes, if those will be good articles. After all, we are talking about a textbook among many. 

 Note that the link to Larson, Ron is not red, but all that article actually says is that Ron Larson wrote the Calculus of a Single Variable: Early Transcendental Functions book. And I doubt that guy did anything else as remarkable as to be worth writing in here. 

 I would say the links in that reference are reduntant. What do you think?