8Zhao Y L,ZhaoBR,QianW,ZhaoJ,ZhangHK,HuangQ H,Lu J,Zhang P,Qian F Y.PS-100 anti-intererence precision earth-electricity observation system and geielectric resonance waves driven by tidal forces prior to large shallow earthquakes,Accepted by,WPGM (Western Pacific Geophysics Meeting,24-27 July 2006 in Beijing,China),2006.
9Park S K,Johnston M J S,mADDEN t r,Morgan F D,Morrison H F.Electromagnetic precursors to earthquakes in the ULF band:a review of observations and mechanisms,Reviews of Geophysics,1993,31,2,117～ 132.
10Qian W,Pedersen B.Indastrial interference magnetotellurics:an example from the Tangshan area,China Geophysics,1991,56,2,265～273.
