UCLA suggests that its faculty refrain from publishing with or reviewing for Elsevier while negotiations are ongoing: https://www.chronicle.com/article/In-Talks-With-Elsevier-UCLA/245311
For those willing to take a longer-term stand, there's always http://thecostofknowledge.com/
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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