<pre>
@unpublished{NSR1997HEZZ,
  author="R. G. {Helmer} and C. {van der Leun}",
  title="Recommended Standards for $\gamma$-Ray Energy Calibration (1997)",
  note="Private Communication",
  year=1997
}</pre>


<pre>
*****                                                                  *****
*  Note: Translation from NSR format to bibTex is imperfect. Entries       *
*    may require editing before use. This is especially true for           *
*    "secondary" sources such as conference proceedings, lab reports, etc. *
*****                                                                  *****
</pre>