JENSEN, J. M. Output factors for squared, rectangular and elongated photon fi elds of linear accelerators: A supplement to Stirling’ formula. Journal of Thai Association of Radiation Oncology, [S. l.], v. 16, n. 1, p. 42–49, 2010. Disponível em: https://he01.tci-thaijo.org/index.php/jtaro/article/view/203515. Acesso em: 16 sep. 2026.