1. Spectroskopische Methoden in der Organishen Chemie nP Nuclear Magnetic Resonances New York;Hesse;Chem Internat Ed Chem,1979
2. Phosphorus Silicon Phosphorus Silicon;Mahran;Sulfur Prakt Chem Sulfur,1989
3. cited therein;Maryanoff;Chem Rev,1989
4. Phosphorus Silicon in press Industry;Trippett;Chem Soc Heterocyclic Communications Sulfur Chem Heteroatom Chem Heteroatom Chem,1962