2016EN 61788-4:2016 Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti and Nb3Sn composite superconductors
2011EN 61788-4:2011 Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductor
2007EN 61788-4:2007 Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors
2001EN 61788-4:2001 Superconductivity Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors