Synthesis of 1,2,3,4-Tetrazines 1,2,3,4-Tetrazine 1,3-Di-N-Oxides Pentazole Derivatives Pentazine Poly-N-Oxides and Nitroacetylenes, Government Report ADA445136 - Shechter, H; Venugopal, M; Srinivasulu, D (US Government, 2006)