Link for published research paper
https://www.google.co.in/url?sa=t&rct=j&q&esrc=s&source=web&cd=28&cad=rja&uact=8&ved=0CF0QFjAHOBQ&url=http%3A%2F%2Fwww.intellectualarchive.com%2F%3Flink%3Ditem%26id%3D1204&ei=ARhyU_STN4G3uASEoYKgBA&usg=AFQjCNGExtc2DgC9eEsmuhKr7V3n5l4sfQ&sig2=u7Hne5bIphPfwl4cCD4cUg&bvm=bv.66330100%2Cd.c2E

Video link for "HCR's Rank or Series Formula"
http://www.toplike.us/play.php?i=oMWXWFXQVxQ