* [http://wiki.nmr-relax.com/Relax_3.3.1 Official release notes]
* [https://gna.org/forum/forum.php?forum_id=2476 Gna! news item]
* [http://article.gmane.org/gmane.science.nmr.relax.announce/58 59 Gmane]* [https://mail.gna.org/public/relax-announce/2014-0910/msg00000.html Local archives]* [http://marc.info/?l=relax-announce&m=141013209125235141013209125236&w=2 MARC]
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