%0 Journal Article %A P. Bosch, F. %A Müller, I. %T Near surface karst structure imaging for hydrogeological inverstigation with the VLF gradient method %D 2003 %J , %V %@ 2214-4609 %C cp-52-00072 %R https://doi.org/10.3997/2214-4609.201414542 %I European Association of Geoscientists & Engineers, %X %U https://www.earthdoc.org/content/papers/10.3997/2214-4609.201414542