Kurni, M., and S. K. “‘Power-As-a-Service’ – A Hierarchical On-Demand Charging Model for Recharging the Mobile Nodes of MANETs”. International Journal of Interactive Mobile Technologies (iJIM), vol. 15, no. 12, June 2021, pp. pp. 170-183, doi:10.3991/ijim.v15i12.23081.