ETOOBUSY 🚀 minimal blogging for the impatient
I asked a question out of lazyness, could have used the web instead.
It turns out that the comment itself contained a little trail for more investigation and I eventually found the paper: ONE METHOD FOR REPRESENTING AN ARC OF ELLIPSE BY A NURBS CURVE, by Emiliyan Petkov and Liuben Cekov.
I also saved a local copy just to be on the safe side.
Material for reading!