LÖFGREN, Kaj-Erik; SPRING, Erik. Neutron Radiation Produced by the 32 Mev Roentgen Beam of a Medical Betatron. Acta Oncologica, [S. l.], v. 9, n. 3, p. 247–256, 1970. DOI: 10.3109/02841867009129103. Disponível em: https://medicaljournalssweden.se/actaoncologica/article/view/34058. Acesso em: 2 sep. 2024.