Yes, I’d be interested to remember where I read that too! I promise that I didn’t make it up, nor look it up on Wikipedia.
Sometimes one recalls a ‘fact’ without knowing from where (or even why) one knows it. It’s also true that sometimes these ‘facts’ turn out to be wrong, and that the memory was faulty.
I want to say ‘Mechanics of Flight’ but someone nicked my early copy and I only have a rather inferior later edition, which I’ve mislaid.
So, if anyone can come up with a reference (come on, ETPS guys!) I’d be very grateful.