* [http://wiki.nmr-relax.com/Relax_4.1.0 Official release notes on the relax wiki].
* [https://sourceforge.net/p/nmr-relax/mailman/message/ Local archives36593472/ Mailing list message].* [https://marcwww.mail-archive.infocom/?l=nmr-relax-announce&m=144485916126262&w=2 Mailing list ARChives (MARC)@lists.sourceforge.net/msg00001.html The Mail Archive].
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