Bojan-Dragos, Claudia-Adina, Precup, Radu-Emil, Tomescu, Marius L., Preitl, Stefan, Tanasoiu, Oana-Maria, AND Hergane, Stefania. " Proportional-Integral-Derivative Gain-Scheduling Control of a Magnetic Levitation System" INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL [Online], Volume 12 Number 5 (10 September 2017)