1. 2,3-Epoxy-13c-methoxy-1,13c-dihydrodibenzo[a,kl]xanthan-1-one
2. Johnson, C. K. (1976). ORTEPII. Report ORNL-5138. Oak Ridge National Laboratory, Tennessee, USA.
3. Rigaku/MSC (2001). CrystalClear. Rigaku/MSC, The Woodlands, Texas, USA.
4. Rigaku/MSC (2004). CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA.