* [The Semantics of x86-CC Multiprocessor Machine Code](http://www.cl.cam.ac.uk/~pes20/weakmemory/popl09.pdf)
*Note: This contribution here is the focus on the rigorous semantics for x86 multiprocessor programs and an axiomatic definition of the memory model. Their definitions and proofs are backed by the [HOL](http://en.wikipedia.org/wiki/HOL_(proof_assistant))(Higher Order Logic) proof assistant.*