I believe it was originally found in this publication: https://www.semanticscholar.org/paper/Human-Factors-Consider...
which you can read here: https://books.google.com/books?printsec=frontcover&vid=LCCN6...
I believe it was originally found in this publication: https://www.semanticscholar.org/paper/Human-Factors-Consider...
which you can read here: https://books.google.com/books?printsec=frontcover&vid=LCCN6...