Chowdhury, D., L. T. Anni, M. M. Hasan, N. A.-T. Bhuiyan, N. Islam, and R. Pervez. “Cryptographic Ledger of Blockchain Technology in Healthcare”. GSC Advanced Research and Reviews, vol. 7, no. 3, June 2021, pp. 028-37, doi:10.30574/gscarr.2021.7.3.0117.