Index: /qipapers.bib
===================================================================
--- /qipapers.bib	(revision 776)
+++ /qipapers.bib	(revision 777)
@@ -22811,2 +22811,10 @@
   author = {Vicidomini, G. and Moneron, G. and Han, K.Y. and Westphal, V. and Ta, H. and Reuss, M. and Engelhardt, J. and Eggeling, C. and Hell, S.W.}
 }
+@article{Hettich2002,
+  year = {2002},
+  title = {Nanometer Resolution and Coherent Optical Dipole Coupling of Two Individual Molecules},
+  pages = {385-388},
+  journal = {Science},
+  volume = {298},
+  author = {Hettich, C. and Schmitt, C. and Zitzmann, J. and {K\"uhn}, S. and Gerhardt, I. and Sandoghdar, V.}
+}