Hello Stukapilot & Nick,
you're probably right. STALIN'S FALCONS is full of inaccuracies :-( However, it's still the best book on the German market with the largest amount of data.
I really should consider acquiring Bykov's work abroad (+learn Russian).
I also think about buying this one:
https://www.amazon.de/dp/0764304763/...I37FHUZSPVQ74W
Can you tell me if it's worth the money ?
Have a nice Thursday,
Michael