From Dirk (CPC):

You use links like
https://dl.acm.org/ft_gateway.cfm?id=3371132
as the direct links to PDFs in the ACM DL.

I think that the new interface of the new ACM DL system prefers
https://dl.acm.org/doi/pdf/10.1145/3371132
and that it would be safer to use those links instead of the old format
(of which it is not clear how long it will be supported).

example: https://popl20.sigplan.org/details/POPL-2020-Research-Papers/16/Backpropagation-in-the-Simply-Typed-Lambda-calculus-with-Linear-Negation

Submitted by Elmer van Chastelet on 17 June 2020 at 14:21