Boström, Mathias, and Drew Parsons. “Observations on the Possible Electromagnetic Nature of Nucleon Interactions and Pions: Historical Manuscript from 1969 by B. W. Ninham and C. Pask”. Substantia (December 20, 2025). Accessed December 24, 2025. https://riviste.fupress.net/index.php/subs/article/view/3509.