An article by Jo Wolff, here.
I like his analysis of why there were so many good women philosophers in the Anscombe, Foot cohort – fewer men so they got the attention they deserved.
I’m not sure about his description of the bullying nature of philosophy as it is practiced, and its effect on the number of women. It’s a bit too close to the view that states that women are ‘gentler’ or as he says ‘lady-like’ than men, and can’t take the pressure. (He is right, of course, that a more constructive approach to arguing is better, but I’m not sure that has anything to do with women numbers).