1. AB KIHLSTROMS MANOMETERFABRIK Instruments for Power and Distribution Transformers & Instruments for SF6 Gas Insulated Switchgear www.qualitrolcorp.com
2. IEC 354: Loading Guide for Oil-immersed Power Transformers 1993.
3. Direct Measurements of the Hot-Spot Temperature of Transformers 129 1990
4. Lampe W Pettersson L Ovren C Wahlström B Hot-Spot Measurements in Power Transformers 1984
5. Nordman H Hironniemi E Pesonen AJ Determination of hot-spot temperature rise at rated load and at overload 1990