Spectrum trading and sharing in unmanned aerial vehicles based on distributed blockchain consortium system. - Lijuan Liu; Muhammad Shafiq 003; Vijay R. Sonawane; Mantripragada Yaswanth Bhanu Murthy; Pundru Chandra Shaker Reddy; K. M. N. Chaitanya kumar Reddy (Comput. Electr. Eng., 2022)