Steve:
If we go by what doug says, "if it ain't locked down it's anybody's for the taking". For instance I have been Known as e-linear for the past twenty years. And that didn't stop others from attempting to use my handle.
But my advice is to show no more or no less respect for his claims than he shows for other peoples property. All I have to do is change the value of one resistor and he can kiss my ass.
Now I will have the e-linear buffered line stage. And it will be just mine! His claimed copyright isn't worth the paper it's written on. And that's a fact Jack!( ie; Doug)