Afifa, Roohma. Non linear controller design for separately excited DC motors / [Thesis or Dissertation] Roohma Afifa. - Islamabad : COMSATS University Islamabad, 2019. - xvii, 115 pages : ; 29 cm Subjects--Personal Names: Supervisor, Index Terms--Genre/Form: Electrical and Computer Engineering Dewey Class. No.: 621.3 / AFI-N