Quantum Mechanics references

Here are Interenet and book references, from which I shamlessly "borrowed" ideas to build my little article ;) I don't know about you, but normally when I can't grasp something from a book or article, what most of the times I will do is to find another one and read it, then probably another one... and generally at some point my brain plays a magic trick on me and everything clicks.
It happened so numerous times that not only I'm not surprised anymore but I always employ this technique on complex topics I want to learn and can't grasp immideately.
So here they are :

Economics and Politics references

Space references