ahh the so called tranny chasers to be honest i don't think a whole lot has been written about them at all i know of some studies which look at the way hiv is transmitted among msm's which look at the men who have sex with transsexuals then there are the writtings of ray blanchard with refer to such men as gynandromoprhphiles or some such but either of those things would be controversial they also ammount to one or two paper's interesting question hope someone looks at it eventually