V. Ujj, T. Szuhánszki, J. Schindler, M. Czugler, E. Fogassy, and G. Keglevich, “Separation of the Enantiomers of p-Chiral Cyclic Phosphorus Compounds”, Hung. J. Ind. Chem., vol. 36, no. 1-2, Sep. 2008.