Question: Borderline Personality Disorder and Transgenderism

Question? : I am looking for information on the behavior and treatment of transgender people with both borderline personality disorder. I am looking for this information so that I can both intellectually understand what my friend is going through and have ideas about how I can be supportive. Transgenderism in psychological and medical journals will probably be referred to as 'gender identity disorder'. I tried to find information, but everything was about one condition with only a short reference to the other. I would like to find scholarly articles that look at both.