%0 Journal Article %A Christensen, E. %T Small vibrator development %D 1992 %J , %V %@ 2214-4609 %C cp-45-00033 %R https://doi.org/10.3997/2214-4609.201410371 %I European Association of Geoscientists & Engineers, %X %U https://www.earthdoc.org/content/papers/10.3997/2214-4609.201410371