@ARTICLE {29423,
author={M. J. M. de Ree and G. Mantas and A. Radwan and S.M. Mumtaz and J. Rodriguez and I.  Otung},
doi={10.1109/ACCESS.2019.2914359},
journal={IEEE Access},
title={Key Management for Beyond 5G Mobile Small Cells: A Survey},
year={2019},
month={May},
volume={7},
number={1},
pages={59200-59236},
ISSN={2169-3536}
}