Nwawudu, E., Ikwu, A., Ikwu, U., Oparah, N., & Nnorom, S. (2020). Proposed Design of a Real-Time COVID-19 Pandemic Contact Tracing Using Mobile Phone. European Scientific Journal, ESJ, 16(36), 1. https://doi.org/10.19044/esj.2020.v16n36p1