Naseer, Muhammad Moazzam, et al. “Synthons for Supramolecular Assemblies: Synthesis of New Triazine-Core Polyhydroxylated and Multi-N-Donor Compounds”. European Journal of Chemistry, vol. 4, no. 2, June 2013, pp. 149-52, doi:10.5155/eurjchem.4.2.149-152.750.