This particular reaction is discussed on this website so I have an idea of what happens. I also have a previous professor whom I asked separately and he gave me a similar mechanism and answer. I've printed out several articles regarding anchimeric assistance (or neighboring group participation). The problem is that the journals that I have discuss the reactions of products that are very different than this reactant (halocycloalkane with a methoxy group one carbon over). I need to cite something that's relevant. The school I'm in doesn't have JACS subscription for undergrads and everything that I find cited I have to go to the library basement, comb through the journals, and carry them up the steps to copy them. I don't mind the work I just cant find sources that are relevant.