Abu Hanifah Ramadhani, Setyo Hartono, and Dennis Ievan Hakim. “Integrated Blood Type Detector With IoT System to Improve Indonesian Red-Cross Public Health Services”. International Journal of Informatics and Computation, vol. 1, no. 1, Jan. 2020, pp. 31-42, doi:10.35842/ijicom.v1i1.10.