4CHEAL J,OAPOS BRIEN S,TUTORM.Buried cable sensor with intruder location[J].IEEE Trans Aerospace and Electronic Systems Magazine,2005,20(7):11-15.ISSN:0885-8985.
5JAMES CHEAL,STEVE O'BRIEN,MIKE TUTOR.Field tests of a buried cable sensor with intruder location[C].38th Annual IEEE International Carnahan Conference ON Security Technology,Albuquerque,New Mexico USA,2004,10:1130-1150.