Adds author's note for GW170104

references.bib

@@ -74,7 +74,7 @@
 
 @article{einstein1916,
   author = {Einstein, Albert},
-  title = {Integration Neherunsweise Feldgleichungen der der Gravitation},
+  title = {Integration N\"{a}herungsweise Feldgleichungen der der Gravitation},
   journal = {Sitzungsber. Preuss. Akad. Wiss.  Berlin (Math.Phys.)},
   year = {1916},
   volume = {22},
@@ -276,3 +276,17 @@
   url = {https://dcc.ligo.org/LIGO-T1500290/public}
 }
 
+@article{GW170104,
+  title = {GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2},
+  author = {{LIGO Scientific and Virgo Collaboration}},
+  journal = {Phys. Rev. Lett.},
+  volume = {118},
+  issue = {22},
+  pages = {221101},
+  numpages = {17},
+  year = {2017},
+  month = {Jun},
+  publisher = {American Physical Society},
+  doi = {10.1103/PhysRevLett.118.221101},
+  url = {https://link.aps.org/doi/10.1103/PhysRevLett.118.221101}
+}