Gender bias in the Supreme Court?

This post includes the abstract of an article which concludes that litigants with more women on their litigation team do less well before the United States Supreme Court: "Our findings suggest that litigation teams that have a higher proportion of female attorneys are less likely to win before the Court. In addition, this bias appears to be highly conditional on judicial ideology. Conservative jurists are more likely than liberal jurists to vote against litigation teams with a higher proportion of women."

I'm not sure that understand what they're saying, that the judges discriminate against the women lawyers, or that the women lawyers discriminate in the kinds of matters they bring before the the Court, or that the lawyers who litigate certain kinds of matters keep women off their teams.