1. Principle of nuclear magnetism;Abragam,1961
2. Earth’s field spectroscopy;Hunter;J Annu Rep NMR Spect,2012
3. SQUID sensors: fundamental, fabrication and applications;Weinstock,1996
4. Analog and digital SQUID sensors;Radparvar,2002
5. SQUID magnetometry for cancer screening a feasibility study;Kenning,2003