This page contains unpublished interesting research on transgenderism that is otherwise difficult to find.
Doorn, C. D. (1997). A gender identity theory of transsexualism. In C. D. Doorn. Towards a gender identity theory of transsexualism. Unpublished doctoral dissertation, Vrije Universiteit, Amsterdam, the Netherlands. [Full text PDF]
McGrane, R. (2001). Motivational differences among typologies of gender dysphoria. Unpublished Honour’s thesis, University of New England, Sydney, Australia. [Full text PDF]
(Some parts of this thesis are missing.)