I've never been concerned about sources outside of my academic life, at least not "legitament" uses of them, so that saves me a lot of time defending any one thing or another.
Most of the sorts of things that I'm looking at fall into the realm of plausibility, consistency, and "common sense."
Basically, I take three datapoints, what's there, what I can find (which is usually either bunk info, or operational requirements), and what would be the ideal in the sim, and then find a point somewhere in the middle and call it solution.
I'm no military hardware expert, it'd be nice if someone wanted to float my way... I could use the help.
Cheers,
David