BS EN 61788-12:2003 Superconductivity - Matrix to superconductor volume ratio measurement - Copper to non-copper volume ratio of Nb3Sn composite superconducting wires
2013BS EN 61788-12:2013 Superconductivity. Matrix to superconductor volume ratio measurement. Copper to non-copper volume ratio of Nb3Sn composite superconducting wires
2003BS EN 61788-12:2002 Superconductivity - Matrix to superconductor volume ratio measurement - Copper to non-copper volume ratio of Nb3Sn composite superconducting wires