Not really, a finnish historian would probably not work with biased materials, seeing as it would most likely put the Red Army in far better light. As for Kilin, he has worked a lot with finnish historians, even going so far as to co-write several books with a couple of them, I do get the feelling that Kilin is putting national pride aside and actually tries to find out the truth. That said, it seems like these sources contradict Domens', and seeing as his "quotes" are partially written with the Cryllic alphabet, does arouse some suspicion does it not? Not only that, but I fail to see how 58 x 17 500 can possibly become 425,640. Sounds a bit fishy to me, actually, it sounds like somebody simply took the two lowest estimations at wikipedia.
I will however admit that saying that all soviet sources are biased might have been a little rash, but I'd never ever trust the official soviet numbers.