Three-Component Procedure for the Synthesis of 5-Aryl-5,8-dihydroazolo[1,5-a]pyrimidine-7-carboxylic Acids - Chebanov, Valentin A; Sakhno, Yana I; Desenko, Sergey M; Shishkina, Svetlana V; Musatov, Vladimir I; Shishkin, Oleg V; Knyazeva, Irina V (Synthesis, 2005)