1. IEEE Electrical Insulation Magazine;duval,2002
2. Brown Boveri Review;dornenburg,1974
3. Selection of optimal values of criteria for the diagnosis of the state of power transformers based on the results of the analysis of gases dissolved in oil;alekseev;Electric Power Statistics,1991
4. IEEE Electrical Insulation Magazine;duval,2005
5. Mineral oil-impregnated electrical equipment in service–guide to the interpretation of dissolved and free gases analysis,2007