WASET
    Tugrul Oktay and  Mehmet Konar and  Mustafa Soylak and  Firat Sal and  Murat Onay and  Orhan Kizilkaya,  Increasing Performance of Autopilot Guided Small Unmanned Helicopter.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 109(1). 133 - 139
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10003445.