Rucz, P., Z. Belső, B. Gáti, I. Koller, and A. Turóczi. “Design and Implementation of Nonlinear Control Systems for Rotary and Fixed Wing UAVs”. Aeronautical Science Bulletins, vol. 27, no. 3, Dec. 2015, pp. 277–300, https://folyoirat.ludovika.hu/reptudkoz/article/view/4588.