Calculus/ Analysis books I am looking for some titles. Not looking for basic textbooks nor advanced, I am craving for real stuff.
More in detail I would like some book that covers calculus in one variable from a more mature perspective ( such as the one that a phd student should have).
Something that may be helpful in technical situation, not a good read, not for pleasure: not the book I deserve but the one I need.
It must be a huge pile of tricks and inequalities.
I must say that I am at my last year at uni as a math student, and I have read or at list I am aware of the classics such as Rudin, to make an example. They are great but not quite what I intend here. I don't need ( I hope) to learn about calculus, I need advanced tools, the kind of things that you run into by luck and you keep using ever after. 
Thank you.

"Introduction to measure theory" by Tao is great, it's also online
