New non-symmetrical 2,5-disubstituted-1,3,4-oxadiazoles bearing a benzo[b]thiophene moiety - Codruţa C. Paraschivescu; Florea Dumitraşcu; Constantin Drăghici; Lavinia L. Ruţă; Mihaela Matache; Ion Baciu; Cristian Dobrotă (ARKIVOC, 2008)