Tekin, Raziye, and Koray Erer. “Three-Dimensional Formation Flight With Generalized Explicit Guidance”. Journal of Aeronautics and Space Technologies 13, no. 2 (July 28, 2020): 201-206. Accessed January 27, 2021. http://jast.hho.edu.tr/index.php/JAST/article/view/423.