1. Regitz, M.; Scherer, O., eds.;Multiple Bonds and Low Coordination in Phosphorus Chemistry; Georg Thieme Verlag: Stuttgart, 1990
2. Appel, R.; Knoll, F.Inorg. Chem. 1989,33, 259
3. Scherer, J.Angew. Chem. Int. Ed. Engl. 1989,33, 259; Scherer, J.Angew. Chem. Int. Ed. Engl. 1989,33, 259
4. 1. (d)Markovski, L. N.; Romanenko, V. D.; Ruban, A. V.Chemistry of Acyclic Two-Coordinated Phosphorus Compounds [in Russian]; Naukova Dumka: Kiev, 1988.
5. Chemega, A. N.; Ruban, A. V.; Romanenko, V. D.; Markovski, L. N.; Korkin, A. A.; Antipin, M. Yu.; Struchkov, Yu. T.Heteroatom Chem. 1991,2, 229