B. F. Adeosun, T. T. Akande, P. A. Oyewusi, and S. A. Akinyele, “PRELIMINARY STUDIES ON THE ELECTRICAL CONDUCTANCE AND THE VISCOSITY OF SOME NIGERIAN TRADITIONAL SOAPS IN AQUEOUS SOLUTION”, Pakistan Journal of Scientific & Industrial Research, vol. 44, no. 6, pp. 315–320, Dec. 2001.