SQUID '80. Superconducting Quantum Interference Devices and their Applications : Proceedings of the Second International Conference on Superconducting Quantum Devices, Berlin (West), May 6-9, 1980
SQUID '85 Superconducting Quantum Interference Devices and their Applications : Proceedings of the Third International Conference on Superconducting Quantum Devices, Berlin (West), June 25-28, 1985