Historical
PMI PSF-EVM-2011
Practice Standard for Earned Value Management - Second Edition
Based on the fundamental principle that past patterns and trends can be good indicators of the future, earned value management (EVM) helps you clearly and objectively see where your project is going and compare it to where it’s supposed to be. This standard describes the elements of EVM and offers examples of how it can fit any project or situation.
Project Management Institute [pmi]