One-Pot Three-Component Synthesis of 3-Amino-5,8-dioxo-5,8-dihydro-1H-pyrazolo[1,2-a]pyridazines - Adib, Mehdi; Koloogani, Somayeh Aali; Abbasi, Alireza; Bijanzadeh, Hamid Reza (Synthesis, 2007)