López-Chávez, Ernesto, et al. “Sites and Zones of Maximum Reactivity of the Most Stable Structure of the Receptor-Binding Domain of Wild-Type SARS-CoV-2 Spike Protein: A Quantum Density Functional Theory Study”. Journal of Clinical Intensive Care and Medicine, vol. 9, no. 1, Apr. 2024, pp. 008-16, doi:10.29328/journal.jcicm.1001047.