Parking guidance system based on ZigBee and geomagnetic sensor technology
YUE Xuejun LIU Yongxin WANG Yefu CHEN Shurong LIN Da QUAN Dongping YAN Yingwei
Journal of Computer Applications . 2014, (3): 884 -887 .  DOI: 10.11772/j.issn.1001-9081.2014.03.0884