A special issue of *Enumerative Combinatorics and Applications* (ECA) has
now been published to mark last year's *Permutation Patterns 2021* online
conference. It is ECA Volume 2 Issue 4, which can be found at
http://ecajournal.haifa.ac.il/#journal-archive if you scroll down.
Best wishes,
David Bevan, Sergey Kitaev and Einar Steingrímsson
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