There are a couple of articles in Russian on Habr[1][2]. At a glance,
it seems like the language was closer to a form of mathematical notation
than it was to what we now consider a programming language.
That was not uncommon. I went to school both in the United States and the USSR. Back there, almost always the student at the top of their class was a girl.
I remember that American female students struck me like a bunch of divas at first. That's when I realized these things are purely cultural.
My father worked in one of these Central Calculation Centers in the 80s. Almost all programmers were women. Man tended to work more with the hardware which was considered more "dirty" work since you had to be stuck for hours in those huge machines trying to find the piece that broke. Too bad we lost all our Ada lang, linear programming books...
[1] https://habr.com/ru/company/ua-hosting/blog/387837/
[2] https://habr.com/ru/company/ua-hosting/blog/274019/