A quick search of the net yielded a student essay titled "Is There Sexism In Music?" (answer, yes). The bibliography includes:
Buzzarte, Elizabette " Advocacy: Vienna Philharmonic Orchestra" IAWM journal, June 1997, p3-8

Buzzarte, Monique " We need a Man for Solo Trombone", IAWM journal, February 1996, p1-5

Fleischer, Tsippie "Is There a Future for Women In Music", IAWM journal, February 1995, p19

Ferjutz, Kelly "Women of notes" suite 101-Classical music articles, CFM/5849 p1

Osborn, William "Art is Just an Excuse: Gender Bias In International Orchestras", IWAM journal, October 1996, p6-14

Pool, Jeannie "The Passionate Pursuits of Musical Women, "Feminism, Unity, Advocacy" IAWM journal, October 1996, p6-14

Ponzio, Diane "At Last a Guitar Designed Specifically for Women", The Sounding Board, Vol 2 January 1997, online edition p1-2

Thompson, Diane NOVA Online, (an editing quote), December 1998

Worland, Gayle, "Clara Boon, Pioneer in Music Publishing, ILWC journal article, June 1997, p26-28

The author notes that instrument manufucturers, such as guitar manufacturers, cater almost exclusively to men; in ignorance they ignore developing the large market for women musicians.

I think that Margaret made some excellent points. In my experience, the men often dominate sessions in numbers and often in personality. It was the first thing that struck me when I went to our local session and listened for the first time. It was obvious that the group of women sat back and waited for the men to take the lead, except for the humble woman accordionist who is well respected as a musician and a quiet force in the local folklore society. She was the strongest presence among the women I watched, probably because she was the strongest female musician there, and the others did not have the time to practice and develop skill. I felt like some of the men were taken aback when I joined and would show up with the expectation that I would be included equally. It isn't something that some men are comfortable with. I don't know why. Generally, the women with families are home with the kids on Sunday night, and the men are taking time for themselves to go play at the session.

This topic is filled with the danger of backlash, because terms like feminism have taken on political connotations in academia that many women who once called themselves feminists, like myself, don't agree with. There is almost a cult of feminism that has formed in academia, and the movement of some to denigrate men in their attempt to find equality for women is really disturbing. I once bought into the notion that being a mother was not as important as having a career. When I saw the end of my childbearing years approaching, you can bet that I realized it was much more important to me to be a parent to my son while he was growing up than to build up social power or money. I realized that creating the next generation of human beings and instilling good character in my child was a greater creativity than any painting or song I could create. I am an artist/musician second and a parent first. I think there are men who feel this way about being fathers, too, and it is hopefully not only something that women are beginning to acknowledge more and more. Have I been paid less than men in equal job positions? Absolutely, all my life.

The stereotyping of men and women is just as destructive as the stereotyping of races.

Alice