Marín-Cortés, A., S. Acosta, F. Gómez, A. García, and S. Quintero. “Identification and Validation of Grief in Facebook Groups on Mourning”. Cyberpsychology: Journal of Psychosocial Research on Cyberspace, vol. 17, no. 1, Jan. 2023, p. Article 4, doi:10.5817/CP2023-1-4.