"Dipole probe: Design and field application of a single-borehole device for measurements of vertical variations of hydraulic conductivity" by Vitaly A. Zlotnik and Brian R. Zurbuchen, November-December 1998 issue, v, 36, no.6 : 884-893. Discussion
Zj. Kabala, "Dipole probe: Design and field application of a single-borehole device for measurements of vertical variations of hydraulic conductivity" by Vitaly A. Zlotnik and Brian R. Zurbuchen, November-December 1998 issue, v, 36, no.6 : 884-893. Discussion, GROUND WATE, 38(2), 2000, pp. 162-163