A. Hiliuta, R.Jr. Landry, F. Gagnon, J…. By RlandryMay 29, 20142003 A. Hiliuta, R.Jr. Landry, F. Gagnon, J. Ileana Corcau, « Modification of the membership degree in control systems using the elliptical membership function », IEEE Transaction on Fuzzy Systems, pp. 12, 14/8/2003.