Paper about "where is the knee of an exponentional function?"

Question

It is a common mistake to name some point of an exponential function "knee".

Some years ago I found a nice paper which collected some examples and some extra anecdotes about this. I do not remember, if it was published in a physics or mathematics journal.

Do you know a paper (perhaps this specific paper) about the "knee" mistake?

Some links about the "knee":

• Is there a name for the point of a exponential curve where the y axis significantly increases?

• http://www.abarry.org/knee.htm