Dr. Beischel was invited to provide an article that reviews contemporary research with mental mediums as an entry for the Society for Psychical Research’s new Psi Encyclopedia. Read the entire “Mental Mediumship Research” entry (with linked references) here: https://psi-encyclopedia.spr.ac.uk/articles/mental-mediumship-research
The Psi Encyclopedia is “a new collection of articles and case studies about psi research, the scientific investigation of psychic phenomena. It’s a work in progress, being created by the Society for Psychical Research in London.” The Psi Encyclopedia can be accessed here: https://psi-encyclopedia.spr.ac.uk/