I had to grope a little, it was in the External Links section! https://web.archive.org/web/20200717054958if_/https://www.ise.ncsu.edu/wp-content/uploads/2017/0

I had to grope a little, it was in the External Links section! https://web.archive.org/web/20200717054958if_/https://www.ise.ncsu.edu/wp-content/uploads/2017/02/Bainbridge_1983_Automatica.pdf https://web.archive.org/web/20200717054958if_/https://www.is...