Yujung Yoon, Mingu Kim, and Youdan Kim, “Three-dimensional Path Planning for Aerial Refueling between One Tanker and Multiple UAVs,” International Journal of Aeronautical and Space Sciences, Vol. 19, No. 4, 2018, pp. 1027-1040.
doi: https://doi.org/10.1007/s42405-018-0098-z