1. IEC 60287-1-1, Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100 % load factor) and calculation of losses – General. 2006 edition 2/AMD1:2014 edition 2.1, International Electrotechnical Commission (IEC).
2. Calculation of cable thermal rating considering non-isothermal earth surface;Purushothaman;IET Gen Trans Distrib,2014
3. Calculation of underground cable ampacity;DeLeon,2005
4. Rating of electric power cables in unfavorable thermal environment;Anders,2005
5. IEC 60287-2-1. Electric cables – Calculation of the current rating – Part 2-1: Thermal resistance – Calculation of thermal resistance. International Electrotechnical Commission (IEC); 2015. p. 126.