Intuitive

• https://paul.physicsnotes.org/doku.php?id=distillery:cpv

Concrete

• https://profmattstrassler.com/articles-and-posts/particle-physics-basics/particleanti-particle-annihilation/
• http://physics.stackexchange.com/questions/391/is-anti-matter-matter-going-backwards-in-time?rq=1

Abstract

Why is it interesting?

FAQ

Is anti-matter matter going backwards in time?

see https://physics.stackexchange.com/questions/391/is-anti-matter-matter-going-backwards-in-time