WASET
    Igor Astrov and  Andrus Pedai and  Boris Gordon,  Flight Control of TUAV with Coaxial Rotor and Ducted Fan Configuration by NARMA-L2 Controllers for Enhanced Situational Awareness.   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2012, vol. 66(6). 750 - 756
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/13553.