Abbas-Temirek, H. H. and Abo-Bakr, A. M. (2016) “Reactions with heterocyclic amidines: Synthesis of several new pyrazolo[1,5-a]pyrimidines and pyrazolo[1,5-a][1,3,5]triazines”, European Journal of Chemistry, 7(1), pp. 107–114. doi: 10.5155/eurjchem.7.1.107-114.1369.