by Fennell, E., Kozminski, K., Bajpai, M., Easterday-McPadden, S., Elmore, W., Fromen, C., Gardell, J., Hartmann, W., Hurley, J., Kerrigan, P., Khunkhun, K., Mozina, C.J., Nail, G., Patel, S., Pence, G., Pierce, K., Smaba, D., Usman, S., Waudby, P., Yalla, M.
Published in IEEE transactions on industry applications (01.11.1998)