Hello, I've been meaning to get into the field of energy markets and one of my interests is modeling price volatility. I have found several working papers that provide a general overview for beginners like me. Things like: http://ssrn.com/abstract=2194214 and an MIT paper by Pindyck (http://web.mit.edu/rpindyck/www/Papers/Vol_NG.pdf) Anything slightly more advanced? Any other suggestions? Thank you.