This is excellent stuff. I’m a follower of Tank Archives who also supply some great information. They, like you, use Russian primary sources and quote them (Tank Archive often reproduce the entire original document too). Zaloga remains a very reliable source in English. As always the information is only as good as the source. I’d suggest a writer with no track record in this area who doesn’t supply evidence of primary source material is quite literally worthless.
Wikipedia can be a very flakey source (I note that high school students here in Australia are told that Wikipedia does not qualify as a valid source to quote for any assignments). Forums are full of opinions posted as fact. If they have any basis it is so often in outdated secondary sources, which is why these posts here are so good and informative.
The Tactical Painter - painting miniature armies for battles on the table top.