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)

New least-squares algorithm for model parameters estimation using self-potential anomalies. - El-Sayed M. Abdelrahman; Khalid S. Essa; Eid R. Abo-Ezz; Mohamed Sultan; William A. Sauck; Abdelmohsen G. Gharieb (Comput. Geosci., 2008)