DM-16832: Add VOEvent refs.

texmf/bibtex/bib/refs_ads.bib

@@ -5306,3 +5306,50 @@ @ARTICLE{2018MNRAS.477.5477P
    adsurl = {http://adsabs.harvard.edu/abs/2018MNRAS.477.5477P},
   adsnote = {Provided by the SAO/NASA Astrophysics Data System}
 }
+
+@MISC{2011ivoa.spec.0711S,
+   author = {{Seaman}, R. and {Williams}, R. and {Allan}, A. and {Barthelmy}, S. and
+	{Bloom}, J. and {Brewer}, J. and {Denny}, R. and {Fitzpatrick}, M. and
+	{Graham}, M. and {Gray}, N. and {Hessman}, F. and {Marka}, S. and
+	{Rots}, A. and {Vestrand}, T. and {Wozniak}, P.},
+    title = "{Sky Event Reporting Metadata Version 2.0}",
+howpublished = {IVOA Recommendation 11 July 2011},
+     year = 2011,
+    month = jul,
+archivePrefix = "arXiv",
+   eprint = {1110.0523},
+ primaryClass = "astro-ph.IM",
+   editor = {{Seaman}, R. and {Williams}, R.},
+   adsurl = {http://adsabs.harvard.edu/abs/2011ivoa.spec.0711S},
+  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
+}
+
+@ARTICLE{2017arXiv170901264A,
+   author = {{Allan}, A. and {Denny}, R.~B. and {Swinbank}, J.~D.},
+    title = "{IVOA Recommendation: VOEvent Transport Protocol Version 2.0}",
+  journal = {arXiv e-prints},
+archivePrefix = "arXiv",
+   eprint = {1709.01264},
+ primaryClass = "astro-ph.IM",
+ keywords = {Astrophysics - Instrumentation and Methods for Astrophysics},
+     year = 2017,
+    month = sep,
+   adsurl = {http://adsabs.harvard.edu/abs/2017arXiv170901264A},
+  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
+}
+
+@ARTICLE{2014A&C.....7...12S,
+   author = {{Swinbank}, J.},
+    title = "{Comet: A VOEvent broker}",
+  journal = {Astronomy and Computing},
+archivePrefix = "arXiv",
+   eprint = {1409.4805},
+ primaryClass = "astro-ph.IM",
+ keywords = {VOEvent, Astronomical transients, Time domain astrophysics, Network protocol design},
+     year = 2014,
+    month = nov,
+   volume = 7,
+    pages = {12-26},
+      doi = {10.1016/j.ascom.2014.09.001},
+  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
+}