Link to the Google Translate version of the paper posted by Beamr above.
https://www-ferra-ru.translate.goog/..._x_tr_pto=wapp
As usual its as interesting for what it lets slip about the Russian forces themselves. e.g.
".....There are 100 such machines in the entire army + the same number in storage...... Their condition and how long they can be brought into combat condition are unknown. But you need to understand that the Finns are unlikely to have them half-rotten and without engines.".....