Training in too narrow a rep bracket

In 1998 I wrote, published and claimed copyright on this concept (bolding added now):

The message is clear - irrespective of the specific goal, training in too narrow a rep bracket may not be as effective as alternating or mixing with different rep brackets. The key is not which reps to use, rather how much time to spend in each different rep bracket.

I was conducting research and I came upon the following exercise in a publication copyright claimed by another 'author' at a subsequent date (bolding added):

The underlying message is obvious – variety alone can accelerate your process and regardless of your goal, the main premise to understand is that it is not merely which rep brackets to use, but also how long to stay within each rep bracket.

And I said to myself: “That looks familiar!” So I cross-referenced it and I said to myself: “Wow! No wonder that looked familiar!”

And I came upon this wording another one more times by the same 'author' in different publications - in the absence of credits or references to the origin or permission to use from the original author (myself), and that the 'author' claimed copyright....