Heikki Vanhala

Laboratory technique for measurement of spectral induced polarization response of soil samples

Heikki Soininen, Heikki Vanhala, H. Vanhala, 1995 .

MAPPING OIL‐CONTAMINATED SAND AND TILL WITH THE SPECTRAL INDUCED POLARIZATION (SIP) METHOD

Heikki Vanhala, H. Vanhala, 1997 .

Spectral IP studies of Finnish ore prospects

Markku Peltoniemi, Heikki Vanhala, H. Vanhala, 1992 .

Detecting organic chemical contaminants by spectral‐induced polarization method in glacial till environment

Heikki Soininen, Ilmo T. Kukkonen, I. Kukkonen, 1992 .