1. Clarke J, Goubau WM, Ketchen MB (1976) Tunnel junction dc-SQUID: fabrication, operation and performance. J Low Temp Phys 25:99
2. Burghoff M (2002) Proceedings of the 13th international conference on biomagnetism, Jena
3. Likharev K, Semenov V (1972) Fluctuation spectrum in superconducting point junctions. Pisma Zhurnal Eksperim i Teoret Fizyki 15:625
4. Ketchen MB (1992) Design and fabrication considerations for extending integrated dc-SQUIDs to the deep-submicron regime. In: Koch H, Lbbig H (eds) Superconducting devices and their applications. Springer, Berlin, p 256
5. Donaldson GD, Cochran A, McKirdy AD (1996) The use of SQUIDs for nondestructive evaluation. In: Weinstock H (ed) SQUID sensors. NATO ASI series. Kluwer, Dordrecht/Boston, p 599