2007BS EN 61788-7:2007 Superconductivity - Electronic characteristic measurements - Surface resistance of superconductors at microwave frequencies
2007BS EN 61788-7:2006 Superconductivity - Part 7: Electronic characteristic measurements - Surface resistance of superconductors at microwave frequencies
2003BS EN 61788-7:2002 Superconductivity - Electronic characteristic measurements - Surface resistance of superconductors at microwave frequencies