Any help would be appreciated, esp. sources that are relatively independent.
'Computing' have had a few pro linux articles recently, it may be worth giving
Might be worth taking a look at IBM, too. They openly support Linux as an operating system, and you can run linux on nearly all of their kit, right up to zSeries mainframes (and yes, you can even get a Suse distribution for it!)
They might have the kind of respectibility you need to sell this. Alternatively, there are a lot of books out there explaining the innards of the linux kernel, I assume citing those isn't out of the question?
P.