NF P52-306-2:1993 DTU 65-20. Thermal insulation of circuits, appliances and accessories. Working temperature greater than ambient temperature. Part 2 : particular specifications.
2006NF P75-402-2:2006 Assembly work - Thermal insulation of circuits, appliances and accessories from -80 oC to +650 oC - Part 2 : contract bill of special clauses.
1993NF P52-306-2:1993 DTU 65-20. Thermal insulation of circuits, appliances and accessories. Working temperature greater than ambient temperature. Part 2 : particular specifications.