Vaughan Griffiths, D., Benoit, David M., Cheong, Yuen Ki, Duncanson, Philip, Han, Xiao, "Novel Ylidic Phosphoryl compounds from Halogenated Furan-2,5-Diones with Trivalent Phosphorus Esters: Application of this approach to new Trisphosphonates containing a Geminal Bisphosphonate Unit", Phosphorus, Sulfur, and Silicon and the Related Elements, 2014