A generic automated/semiautomated digital multi-electrode instrument for field resistivity measurements. - Douglas D. Werkema Jr.; Estella Atekwana; William A. Sauck; Johnson A. Asumadu (IEEE Trans. Instrum. Meas., 2000)

IP4DI: A software for time-lapse 2D/3D DC-resistivity and induced polarization tomography. - M. Karaoulis; André Revil; Panagiotis Tsourlos; Douglas D. Werkema Jr.; B. J. Minsley (Comput. Geosci., 2013)