Organophosphorus Compounds, Part 168; 1,3-Dipolar Cycloaddition Reactions of 1,3,5-Triphosphinines with Nitrile Oxides - Weidner, Steffen; Renner, Jens; Bergsträßer, Uwe; Regitz, Manfred; Heydt, Heinrich (Synthesis, 2004)