7Takaaki Nara,,Satoshi Suzuki,Shigeru Ando.Aclosed-form formula for magnetic dipole location by measurement of itsmagnetic field and spatial gradients. IEEE Transactions on Magnetics . 2006
8Watermann J,Lam J.Distribution of magnetic field variations,differences and residuals. Saclantcen report SR-304 . 1999
9Tarek El Tobely,Ahmed Salem.Position Detection of Un-exploded Ordnance from Airborne Magnetic Anomaly Da-ta Using 3-D Self Organized Feature Map. Internation-al symposium on signal processing and information tech-nology . 2005
10Takayuki Inaba,Akihiro Shi ma,Masaharu Konishi.Magnetic dipole signal detection and localization using subspace method. Electronics and Communications in Japan . 2002