Hacker News
- PID Without a PhD (2016) [pdf] https://www.wescottdesign.com/articles/pid/pidWithoutAPhd.pdf 58 comments
- PID Without a PhD (2016) [pdf] https://www.wescottdesign.com/articles/pid/pidWithoutAPhd.pdf 106 comments
- PID Without a PhD (2016) [pdf] http://www.wescottdesign.com/articles/pid/pidWithoutAPhd.pdf 114 comments