C. Devendranath Reddy, G. Tirupathi Reddy, and M. Reddy, “1H, 13C and 31P NMR Studies of 2-(Substituted Phenoxy) 2,3-Dihydro-1H-Naphtho- [1,8-de]-1,3,2-Diazaphosphorine-2-oxides ”, ajc, vol. 5, no. 2, pp. 291–295, Mar. 2010.