VASHISTHA, ATUL, and S.P.S. JADON. “Synthesis and Characterization of Al(III) Complex of 1,3,5-Hexahydrocyclophosphazene”. Asian Journal of Chemistry, vol. 21, no. 9, Mar. 2010, pp. 7449-51, https://asianpubs.org/index.php/ajchem/article/view/12248.