As is often the case with articles about Metal, written my mainstream writers, the definition of what is and what isn't Metal is a bit lacking, as is a soild comprehension of what sub-genres bands fall into. That aside, it's a pretty good read.
http://www.popmatters.com/columns/begrand/051014.shtml
Zod
http://www.popmatters.com/columns/begrand/051014.shtml
Zod