Is the Phillips Curve Still Relevant?

Yes, There Is a Trade-Off Between Inflation and Unemployment by N. Gregory Mankiw
https://www.nytimes.com/2019/08/09/business/trade-inflation-unemployment-phillips.html

Why Is Inflation Low Globally?

https://www.frbsf.org/economic-research/publications/economic-letter/2019/july/why-is-inflation-low-globally/

The Flattening of the Phillips Curve: Policy Implications Depend on the Cause

https://www.clevelandfed.org/~/media/content/newsroom%20and%20events/publications/economic%20commentary/2019/ec%20201911/ec_201911.pdf

The Phillips Curve Debate:

http://fortune.com/2019/06/14/phillips-curve-unemployment-inflation/

The Phillips curve isn’t dead yet

http://review.chicagobooth.edu/economics/2019/article/phillips-curve-isn-t-dead-yet

Is the Phillips Curve Dead? And Other Questions for the Fed

https://www.wsj.com/articles/is-the-phillips-curve-dead-and-other-questions-for-the-fed-1525388237