1. J. Krenzer, Increasing the yield of plants having storage organs by treatment with triazolidinones, U.S. Pat. 3,925,054, Chem. Abstr. 84 (1976) 55326.
2. Human β3 adrenergic receptor agonists containing cyclic ureido-benzenesulfonamides;Parmee;Bioorg. Med. Chem. Lett.,1999
3. J. Krenzer, 2-Alkyl-4-aryl-1,2,4-triazolidin-3-ones. U.S. Pat. 3,922,162, Chem. Abstr. 84 (1976) 121834.
4. J. Krenzer, 1,2,4-Triazolidin-3-ones. Ger. Offen. Pat. 2,510,573, Chem. Abstr. 84 (1976) 31095.
5. Reaction of diaziridines with diphenylketene and isocyanates;Komatsu;J. Org. Chem.,1974