Kumar Pandey, Atulya. “Fourier Transform 1H NMR and IR Spectra of Novel O-Aryl-O-Ethyl-2-Chloroethyl Phosphonates”. Asian Journal of Chemistry, vol. 22, no. 4, Mar. 2010, pp. 2811-5, https://asianpubs.org/index.php/ajchem/article/view/11481.