Hi, Nick.
Concerning those battles and claims as well as corresponding Soviet losses, here are the links to the original articles by Aleksandr Mardanov:
http://www.airpages.ru/dc/hist_8.shtml
http://www.airpages.ru/dc/hist_83.shtml
And a summary of Rudolf Mueller's claims in comparing with real losses:
https://ru.wikipedia.org/wiki/%D0%9C...BB%D1%8C%D1%84