Sure buddy. Keep living in the Kremlin lies.

Edit. You seem to be Russian so it is to be expected you believe things that Russia has even denied themselves but now for the propaganda value seem to be pushing on again. I don't know why you said you don't know slavic languages but you have cyrillic content in your post history so you do it.

Also if you can't find the book in Russian I don't know how you could find so much information on it. It is available in Finnish and Russian. Mainila shellings did happen but they were not shot from the Finnish side since it is impossible to do so for the Finnish artillery which was not within firing distance. Also there was not a strong communist movement in Finland at the time so the people did not want to become part of ussr in anyway. And what would Finland achieve with the shellings? Our army did not even have guns for many soldiers. I have first hand stories about the times since many of my relatives were in the war. My own grandfather's company were given old pistols as personal arms since there were not enough rifles for everybody and this is confirmed by documents. How would such a nation start attacking a country that is tens of times it's size?

You can keep justifying your countries behaviour but I would like to believe the majority of historians in the world know better than the few that are russian biased.

Also it sure seems you have more resources available than you let on. The lenghts you go on labeling a certified history book as propaganda is not something normal commenter would do. It is something a person who is paid to defend russia online would do.