Index: /qipapers.bib
===================================================================
--- /qipapers.bib	(revision 618)
+++ /qipapers.bib	(revision 619)
@@ -21446,2 +21446,12 @@
   author = {Agrawal, A. and Quirin, S. and Grover, G. and Piestun, R.}
 }
+@article{Backlund2012,
+  number = {47},
+  year = {2012},
+  title = {Simultaneous, accurate measurement of the {3D}
+position and orientation of single molecules},
+  pages = {19087-19092},
+  journal = {Proceedings of the National Academy of Sciences USA},
+  volume = {109},
+  author = {Backlund, M.P. and Lew, M.D. and Backer, A.S. and Sahl, S.J. and Grover, G. and Agrawal, A. and Piestun, R. and Moerner, W.E.}
+}