IEEE (2012) C57.104-2008—IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers. Minutes of WG, Meeting, Nashville, 13 March.
 IEC (1999) Guide to the Interpretation of Dissolved and Free Gasses Analysis. IEC Standard 60599, IEC publ. 60599, Mar.
 Mollman, A. and Pahlavanpour, B. (1999) New Guidelines for Interpretation of Dissolved Gas Analysis in Oil-Filled Transformers. Electra, CIGRE France, 186, 30-51.
 Sahri, Z.B. and Yusof, R.B. (2014) Support Vector Machine-Based Fault Diagnosis of Power Transformer Using k Nearest-Neighbor Imputed DGA Dataset. Journal of Computer and Communications, 2, 22-31.
 Singh, S. and Bandyopadhyay, M.N. (2010) Duval Triangle: A Noble Technique for DGA in Power Transformer. International Journal of Electrical and Power Engineering, 4, 193-197.
 Qi, Y.G., Ming, L.K., Sing, G.B., Sung, S.U. and Xia, S. (2012) Ba Dou D/S #4DTr Overhaul Report. Taiwan Power Company Institute, Taipei City.