1. The fluxgate magnetometer;Primdahl;J. Phys. E: Sci. Instrum.,1979
2. Review of fluxgate sensors;Ripka;Sens. Actuators A,1992
3. Performance and applications of a two axes fluxgate magnetic field sensor fabricated by a CMOS process;Grüger;Sens. Actuators A,2001
4. Datasheet Philips KMZ51, www.semiconductors.philips.com.
5. Datasheet Honeywell HMC 1001/1002, www.honeywell.com.